A Quick Guide to Resolving Error 0x80070571

Windows 11 has been officially presented during Microsoft’s virtual event on June 24^th. Since presentation internet has been pretty live and busy with a discussion about it, some discussions are positive, some not so much but that is expected and it happens always when a new product is presented. One of information that we have about Windows 11 is tied to the home edition of this OS, Windows 11 home edition will require an internet connection at setup, and a Microsoft account in order to be installed and used. Previous versions of Windows could be installed and used with local accounts but it seems Microsoft has abandoned that idea for its new OS. OS will be delivered mostly as updates or via internet download so internet and online requirement make sense but why it cannot use the local account and must have a Microsoft one is beyond me.

When we purchase a computer, usually it is meant to be used by one person. Sometimes we would like to share our computer with other people, with friends and family members but we would also like to keep some privacy for ourselves in the process. Lucky for us Windows 10 will let us create multiple user accounts which then can be used by other persons with their own settings, documents, etc. The only requirement is to already have one user account which is automatically created when Windows is installed. This guide will lead you step by step in the creation of a new user account within Windows 10, so grab your favorite drink, and let's begin.

Creating new account

First thing is to click on the windows icon on the bottom left and open start menu, from start menu click once on settings. When the settings window opens, choose ACCOUNTS on it. Windows will then go to the accounts settings page. Within that page, click on the Family & other users to open the setting for the chosen section on right. On the right settings, screen navigate to the lower section and click once with the left button on add someone else to this PC When add someone else to this PC is clicked, pop up window will appear which will ask you to provide the persons email address and later on the password of his/her Microsoft account, after the required information is provided you are done, a new user has been added and he can use his Microsoft credentials on the login screen to use this computer.

Setting up a user without Microsoft ID

However, if you do not wish to add a new user via his Microsoft login credentials or the person does not have them, on the pop-up window click on I don't have this person's sign-in information. This will open yet another pop-up giving you the option to create a Microsoft account for this person, to use a phone number instead of a Microsoft account, or to create a new email address for the user. Any of these options will create a new user for this computer with provided credentials but there is the last option at bottom of the pop-up which will allow you to create a local user only without a Microsoft account. This user will be able to use this computer, will not be able to transfer his document through various devices like he/she would if using a valid Microsoft account but it could use the computer and personalize it fully to his/her liking. Once the link is clicked, you will be presented with a floating window requiring you to input needed information in order for the account to be created. You will need to provide username, password, and answers to 3 security questions. Once all information has been provided, click on next and your new non-Microsoft local user has been created. Now when you click on Family & other users you will see that Windows has added a new user with the provided name to this computer. If you wish, you can add another user in the same manner, following the previous steps. Microsoft Windows does not have a limit for how many users can be on one computer so feel free to create as many as you like.

User account options

Now, clicking on the existing created user will open user options. From there you will have options to remove the user, therefore removing him/her from this computer, note that removing the local user will remove permanently his/her settings and they would not be able to be restored, or you can change the user account type. Click on Change account type. Under account type, you will have the option to promote this user to an administrator if you wish or you can leave it as a standard user.

Windows Vista had in it animated wallpapers on desktop but sadly how they were heavy on system resources Microsoft abandoned the idea. Moving forward a couple of years later we have Windows 10 but still, we do not have live animated wallpapers. Since I am the kind of person who does not want to wait on Microsoft and now it is time to bring animated wallpapers back I am going to make one all by myself and you are welcome to join the ride and do the same for you as well. Enough talk, let's dive into how we can make animated wallpaper for our Windows 10.

Choosing the application

First, we will need some form of application which can we look at our animated wallpapers and since they are animations it means video, so we will need a video player and what better choice than a VLC player, an open-source light weighs all-format player. Get a VLC player from here and install it.

Finding video source

The next thing is to of course have some looping video that we will use as background. There are many sites and ways to get seamless loop videos, I use this youtube channel for my backgrounds. Altho you can use any video footage you want it is recommended that it is not too long, that it is hi-resolution so we do not have pixels on-screen, and if you can, get it as seamless since we do not want to see stutter when the video is lopped from the beginning. So hopefully you have desired video and VLC player installed.

Putting it all together

Copy the following code and paste it into your search bar in Windows to open the Startup folder, or navigate to the Startup folder yourself via file explorer if you know where it is. %appdata%\Microsoft\Windows\Start Menu\Programs\Startup Now, next thing is to copy and past the VLC shortcut into this folder so it is started when Windows is first time booted. Right-click on the shortcut and in the edit field paste this: "C:\Program Files\VideoLAN\VLC\vlc.exe" --video-wallpaper --qt-start-minimized --no-qt-fs-controller --repeat --no-video-title-show --qt-notification=0 "C:\videopath\filename.mp4" where "C:\Program Files\VideoLAN\VLC\vlc.exe" is the path where VLC is installed, point this to where you have installed it "C:\videopath\filename.mp4" is the path where you have your video that you wish to use as animated wallpaper. Please note also that in my case there is mp4 as an extension but it does not need to be mp4, just use any extension VLC can open and play.

Conclusion

And that's it, you have successfully made an animated background or live wallpaper on your Windows 10 computer. You can change your wallpaper anytime by editing shortcut and giving it a new path to a new video or simply overwrite the existing one with a new baring same name.

Crash Dump is a type of malfunction that can happen when a few portions of the processor's data or RAM memory are erroneously copied to one or more files. It is common among Windows PCs. It used to be most prominent on the Windows 95 edition but subsequent versions have mostly remedied the situation. Even with the remedies over time though, this error still occurs.

Error Causes

A Crash Dump usually points to some serious and critical errors with your Computer. Below are some of the possible causes for this error:-

• Corrupt memory
• Incorrect configurations on hardware
• Programming errors.
• Incompatible drivers
• Faulty Operating system

Despite the listed causes for Crash Dumps. Nobody is ever ready for them. A crash dump is classified as an unexpected error simply because it can happen anytime.

Further Information and Manual Repair

Most PC users get scared and anxious when a crash dump happens. Which need not be the case. You can easily repair a Crash Dump without necessarily requiring a computer technician. Follow these simple steps and the malfunction will soon dissipate:

a) Re-Install the Operating System

Put the setup CD into the computer disk drive. Once you've completed this, reboot the pc.

b) Push F8

Push the F8 function key on your keyboard while the pc is re-booting. This takes you to a menu where you should choose “Advanced Boot Options”

c) Click "Repair My Computer"

As soon as you push the F8 option, and do what's suggested in the last measure above, you must click on "Repair My Computer" and press the "Return/Enter" key.

d) Click on the "Startup Repair"

Search for the start-up repair option, and choose it. Subsequently, move to Next. Using this method, the cause of the Crash dump will undoubtedly be recognized and ended after a thorough scan of your system. Additionally, it is smart to take note of the whole Crash Dump information that appears on your screen. Windows supplies you with detailed error messages. Write down each of the error codes in hexadecimal values as well as capital characters as displayed on the screen.

• Disconnect Hardware  and Un-Install all Drivers

Disconnect and remove any new hardware that is causing your PC to crash dump. Uninstall any drivers you used to install the hardware. If this solves the problem, contact the hardware manufacturer and request the latest and updated device drivers. At length, prior to starting panicking, see the error information that appears on your own display. Browse to see whether it includes info on a certain driver that you ought to search for and install. Bottom line, remain calm when your computer crash dumps and use the mentioned steps to repair it.

When you get an igfxem.exe error in Windows, it is not really clear what does this means, usually, Windows throw us some code or we get a DLL error, rarely we get an EXE error. So what does this error means? Intel Graphics Executable Main Module, shortly called as IgfxEM module is a part of the Windows operating system. When you run Microsoft .NET Framework applications that use the AS/400 Data Queue ActiveX control (Mseigdq.dll) to read from and to write to IBM iSeries (AS/400) data queues, you may experience this error. In order to overcome this error and cope with it try the following things:

1. Increase Virtual Memory

   Go to the Start Menu and click on Settings. Type performance. Choose Adjust the appearance and performance of Windows. In the new window, go to the Advanced tab and under the Virtual memory section, click on Change. At the bottom of the new window, check what the Recommended value is and how it compares to Currently allocated. If the current setting is significantly less than the recommended, uncheck the Automatically manage paging file size for all drives box at the top of the same windows and then click on Custom size. Enter the Recommended value in the Initial Size box, and a larger figure in the Maximum size box. Click OK to save the new settings.

2. Download and update .NET framework

   Go to the Microsoft website and download the latest .NET framework. Once the download is complete, install the package following onscreen instructions.

3. Reinstall INTEL graphic drivers

   Go to the intel website and download the latest graphic drivers for your graphic card model. Once the download is complete, install the package following onscreen instructions.

4. Run SCF scan

   If all else fails, run command prompt and inside type sfc /scannow

A few days ago we celebrated fixing of months-long PrintNightmare vulnerability by Microsoft, sadly a new bug and issue have been found. Firstly discovered Microsoft stated:

A remote code execution vulnerability exists when the Windows Print Spooler service improperly performs privileged file operations. An attacker who successfully exploited this vulnerability could run arbitrary code with SYSTEM privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

A few days ago, Microsoft officially released a patch that was supposed to finally fix it. As you might recall this vulnerability was present for quite some time, Microsoft's solution after a long struggle was to elevate certain privileges to administrator account only and remove user accounts from managing printers. It complicated things a little bit but it was stated payoff was worth it. The new issue now is that on a system that already had accounts created and set, old accounts still can hijack the system, patch issues address only accounts that are created after the fix is administrated, old ones can still do whatever they want. Once again of course Microsoft has stated that until it is again resolved you should again disable the Print Spooler service as a temporary workaround.

If you have encountered the “YOU ARE NOT AUTHORIZED TO ACCESS THIS WEB PAGE AS PER THE DOT COMPLIANCE” error while trying to visit a website using either Firefox or Chrome browser, then read on as this post will guide you on how you can fix this error. Apart from this error message, you might also see an alternative message that says, “Web Page Blocked! The page you have requested has been blocked because the URL is banned as per the Government Rules”. When you get any of the aforementioned error messages when visiting a website, this means that it has been marked. It is mostly recommended to not access the site as it might be blocked for some illegal reason. However, if you are certain that the website is legitimate and safe and you believe that it has been blocked by accident, then you can check out the given methods in this post to unblock and access the blocked or restricted website. There isn’t actually a straightforward way to remove the restriction on the website or the DOT compliance. And it won’t matter what browser you use as you will still get the same error. Thus, the best way to go about this issue is for you to bypass the ISP restriction. But before you proceed, keep in mind that the ISPs (Internet Service Providers) can block any website when a request goes through their servers.

Option 1 – Try changing the DNS

If the request to access the website does not go through the ISP’s DNS server, you might have a chance in accessing it by changing your DNS settings. You can try using the Google Public DNS.

• Tap the Win + R keys to open the Run dialog box.
• Then type “inetcpl.cpl” in the field and hit Enter to pull up the Internet Properties.
• After that, go to the Connections tab and select the LAN settings.
• From there. Uncheck the “Use a Proxy Server” option for your LAN and then make sure that the “Automatically detect settings” option is checked.
• Now click the OK and the Apply buttons.
• Restart your PC.

Note: If you are using a third-party proxy service, you have to disable it.

Option 2 – Try to install a Proxy Extension

You could also try installing a Proxy extension or Proxy software as it could also help you access the website you are trying to open as it allows you to access the blocked websites by routing the request through their server. Aside from that, it can also hide it from ISPs to make them look like the content is coming from the proxy servers.

Option 3 – Try using a VPN connection

There are instances when the network that your computer is logged on might have blocked your access to the website you are trying to open and so to fix it, you can try to use a VPN connection. There is a lot of free VPN software out there but just make sure that you install a trusted one. Once you’ve connected using VPN, try to open the website again and see if you can now access it.

Option 4 – Check the Windows Host file

You can also try to cross check the Windows Hosts file to find out if the website you are trying to open has been blocked because if it is, then it’s no wonder why you’re getting the ERR CONNECTION TIMED OUT error in Chrome. There are instances when some third party application modifies the file and add some websites to the block lists. So if the website is indeed blocked, you need to remove it from the list.

Option 5 – Try to contact your ISP

If none of the options given above worked, then you can try to contact your ISP as there are times when DOT clears a website, the ISPs are still blocking it. Thus, it’s probably better if you reach out to them and ask them to unblock the website from their end.

This toolbar/web browser extension is ad/search-supported that is typically installed as an optional offer, users generally have this bundled with 3rd party software. During setup, this toolbar will modify the home page and new tab pages to the affiliate search portal MyWay.com using a primary search engine to collect shared search revenue. It will also modify the default search provider as well. While this extension is installed users will experience a display of additional ads and sponsored content throughout their browsing sessions, as well as the possibility of pop-up ads. Several anti-virus scanners have marked this extension as a Browser Hijacker and it is recommended to remove it from your computer.

About Browser Hijackers

Browser hijacking means that a malicious code has taken control over and altered the settings of your internet browser, without your consent. They are designed to interfere with browser programs for a variety of purposes. Usually, it’ll drive users to predetermined websites that are looking to increase their advertising campaign income. Though it may seem naive, all browser hijackers are damaging and thus always regarded as security risks. In a worst-case scenario, your internet browser can be hijacked to download malicious software that can do a great deal of damage to your laptop or computer.

How to know if your internet browser has been hijacked

The common symptoms that indicate having this malicious software on your PC are: 1. home page is modified 2. bookmark and the new tab are likewise modified 3. default online search engine is changed 4. you’re getting new toolbars you have never found before 5. your internet browser displays endless pop-up ads 6. your web browser has become unstable or starts running slowly 7. you can’t visit certain websites like homepages of anti-malware software.

Exactly how browser hijacker finds its way onto your computer system

Browser hijackers can enter a computer by some means or other, including via downloads, file sharing, and e-mail also. They may also come from any BHO, extension, add-on, toolbar, or plug-in with malicious intent. Browser hijackers sneak into your pc in addition to free software application downloads that you unintentionally install alongside the original. Some of the most popular hijackers are MyImageConverter, Conduit Search, Babylon Toolbar, Sweet Page, OneWebSearch, and CoolWebSearch.

Learn how to get rid of browser hijackers

Certain hijackers could be removed by just uninstalling the related freeware or add-ons through the Add or Remove Programs in the Windows control panel. In some cases, it could be a difficult job to find and remove the malicious piece because the associated file could be running as part of the operating system process. Besides, browser hijackers can modify the Windows registry so it can be quite tough to restore all the values manually, especially when you are not a very tech-savvy person. You can choose automatic browser hijacker removal by just installing and running an efficient anti-malware program. SafeBytes Anti-Malware detects all types of hijackers – including MyImageConverter – and eliminates every trace quickly and efficiently. In addition to anti-virus software, a PC optimizer program, like Total System Care, can help you fix Windows registry errors, remove unwanted toolbars, secure your internet privacy, and boost overall computer performance.

What to Do if Virus Stops You From Downloading Or Installing Antivirus?

Practically all malware is bad, but certain types of malware do much more damage to your PC than others. Some malware variants alter web browser settings by adding a proxy server or change the PC’s DNS configuration settings. In such cases, you’ll be unable to visit some or all of the websites, and therefore not able to download or install the required security software to clear out the computer virus. If you are reading this now, you might have perhaps realized that virus infection is a reason behind your blocked net connectivity. So how to proceed if you need to install an anti-virus software like Safebytes? Follow the instructions below to remove malware by alternate methods.

Download the software in Safe Mode with Networking

The Windows operating system comes with a special mode referred to as “Safe Mode” in which only the minimum required programs and services are loaded. In the event the malware is blocking internet connection and affecting your computer, running it in Safe Mode enables you to download anti-virus and run a diagnostic scan whilst limiting potential damage. To get into Safe Mode or Safe Mode with Networking, press F8 while the system is booting up or run MSCONFIG and locate the “Safe Boot” options in the “Boot” tab. Once you are in safe mode, you can try to install your anti-malware application without the hindrance of the malware. Now, you can run the antivirus scan to get rid of viruses and malware without hindrance from another malicious application.

Download the security software using an alternate internet browser

Some malware only targets particular web browsers. If this sounds like your situation, utilize another web browser as it might circumvent the virus. If you seem to have a trojan attached to Internet Explorer, then switch to an alternate web browser with built-in safety features, such as Firefox or Chrome, to download your preferred anti-malware program – Safebytes.

Install anti-malware on a USB drive

Another option would be to make a portable antivirus program on your USB flash drive. To run anti-malware from a USB pen drive, follow these simple measures: 1) On a virus-free computer, download and install Safebytes Anti-Malware. 2) Plug the USB drive into the clean computer. 3) Double-click on the downloaded file to open the installation wizard. 4) Select the drive letter of the flash drive as the location when the wizard asks you exactly where you want to install the antivirus. Follow the on-screen instructions to finish the installation process. 5) Transfer the flash drive from the uninfected computer to the infected computer. 6) Double-click the Safebytes Anti-malware icon on the USB drive to run the software. 7) Hit the “Scan” button to run a full computer scan and remove viruses automatically.

Protect Your PC and Privacy With SafeBytes Anti-Malware

Are you looking to install the best anti-malware software program for your PC? You can find many applications on the market which come in free and paid versions for Windows systems. A few of them do a great job in eradicating malware threats while some will affect your PC themselves. You should look for a product that has obtained a good reputation and detects not only viruses but other types of malware as well. While considering the highly regarded applications, Safebytes AntiMalware is certainly the highly recommended one. SafeBytes anti-malware is trustworthy software that not only secures your PC completely but is also quite user-friendly for people of all ability levels. Through its cutting-edge technology, this software will help you protect your computer against infections caused by various kinds of malware and similar internet threats, including adware, spyware, viruses, worms, trojans, keyloggers, ransomware, and potentially unwanted program (PUPs).

SafeBytes anti-malware offers an array of advanced features which sets it aside from all others. Let’s take a look at a few of them below:

Real-time Threat Response: SafeBytes provides real-time active supervision and protection from all known computer viruses and malware. It’ll inspect your personal computer for suspicious activity regularly and its unrivaled firewall protects your computer from illegal access by the outside world. World-class AntiMalware Protection: Using a critically acclaimed anti-malware engine, SafeBytes offers multilayered protection which is designed to catch and get rid of viruses and malware that are hidden deep inside your computer’s operating system. Web protection: SafeBytes inspects the hyperlinks present on a webpage for possible threats and notifies you if the site is safe to visit or not, through its unique safety ranking system. Light-weight: This application is not “heavy” on the computer’s resources, so you’ll not see any performance troubles when SafeBytes is working in the background. 24/7 Customer Support: Support service is readily available 24 x 7 x 365 days through email and chats to answer your concerns. SafeBytes has developed a great anti-malware solution to help you conquer the latest malware threats and virus attacks. You can be sure that your computer will be protected in real-time once you put this tool to use. So if you’re looking for the absolute best malware removal application out there, and if you don’t mind paying out a few bucks for it, opt for SafeBytes Anti-Malware.

Technical Details and Manual Removal (Advanced Users)

To get rid of MyImageConverter manually, navigate to the Add or Remove programs list in the Control Panel and choose the program you want to get rid of. For web browser extensions, go to your browser’s Addon/Extension manager and choose the plug-in you intend to disable or remove. You may also want to reset your home page and search engine providers, and also delete temporary files, browsing history, and cookies. If you opt to manually delete the system files and Windows registry entries, utilize the following checklist to make sure you know precisely what files to remove before performing any actions. But bear in mind, editing the Windows registry is usually a difficult task that only advanced users and professionals should attempt to fix the problem. In addition, some malware is capable of replicating or preventing removal. It is highly recommended that you carry out the removal procedure in Windows Safe Mode.

Gaming can be sometimes a very cheap hobby, sometimes can be really expensive. It really depends on your preferences or gaming habits. So for all of you game spenders, we have compiled a little list of WEB sites where you can find games cheap. Provided sites are checked ones and not scam. You can purchase without concern. Also, note that some of these sites will require you to create an account in order to be able to make a purchase.

List of WEB sites for cheap purchases

Is There Any Deal

https://isthereanydeal.com/ Is there any deal really behaves as it sounds, it is basically a search engine tailored to find existing deals on required games. Type in the desired game and see if anywhere you can find a deal on it. The site also features wait for better price options as well as the price history of the game and the trend of its sales.

Cheap Shark

https://www.cheapshark.com/ On cheap shark by typing game name, you will get its listing on different online retailers, like Steam, EPIC, etc. so you can compare prices among them and pick the best deal. Site packs are also the cheapest ever feature so you can check the lowest price ever on the wished title and you can get alerts and notifications on prices.

Humble Bundle

https://www.humblebundle.com/ Humble bundle got famous for its pay what you want approach due to its origins where it was selling games and donate money to charities. Even today they go by this logic once they decide to place great games on sale for charity purposes and you can donate any amount you wish (there is the minimum amount, but it is very cheap). And regular cheap bundles make this site one of the best out there.

Fanatical

https://www.fanatical.com/ Fanatical is a site that will offer you to get titles in a bundle with a discount, the good stuff is that you can create your own bundle and get a discount on bulk purchases. And the site also offers flash deals and holds sales where you can buy stuff cheaper.

Slick Deals

https://slickdeals.net/deals/games/ If you are looking for the best deals on daily basis slick deals is the site for you. We could not found a better website that offers cheaper deals on a daily basis and you can subscribe to get notified in email about daily discounts.

Green Man Gaming

https://www.greenmangaming.com/ Green Man Gaming is one of the best stores and game discount sites out there, it might not be the cheapest but one very important thing about it is that keys for Stream and Xbox come directly from the game publisher so you can rest assured that they are all 100% legal and do not come from some third party benefits and resellers. And that's it for now. We hope to see you again on our site for more articles and error fixing tips.

Computers viruses, worms, ransomware, etc. are kinds of malicious software that no user should take lightly. On several occasions, we have touched upon security steps that each user should take in order to protect its identity and data. Sadly sometimes even when all precautions are taken some malware can still slip through and wreak havoc. Today we are looking at some of the worst or the best, depending on your view that has indeed wreaked plenty of havoc.

10 worst computer viruses in history

In the list of the 10 most famous computer viruses below, we show the costs, dates, reach, and other key facts. First a note about terms: we use the words “virus” and “worm” interchangeably because most readers search for them that way. But there’s a subtle difference that we explain after the list.

1. Mydoom – $38 billion

The worst computer virus outbreak in history, Mydoom caused estimated damage of $38 billion in 2004, but its inflation-adjusted cost is actually $52.2 billion. Also known as Novarg, this malware is technically a “worm,” spread by mass emailing. At one point, the Mydoom virus was responsible for 25% of all emails sent. Mydoom scraped addresses from infected machines, then sent copies of itself to those addresses. It also roped those infected machines into a web of computers called a botnet that performed distributed denial of service (DDoS) attacks. These attacks were intended to shut down a target website or server. Mydoom is still around today, generating 1% of all phishing emails. That’s no small feat considering the 3.4 billion phishing emails sent each day. By that figure, Mydoom has taken on a life of its own, infecting enough poorly-protected machines to send 1.2 billion copies of itself per year, 16 years after its creation. Though a $250,000 reward was offered, the developer of this dangerous computer worm was never caught. Wondering what makes the world’s most secure computers so safe? See the Tech@Work guide: Upgrade to the World's Most Secure and Manageable PC

2. Sobig – $30 billion

The 2003 Sobig computer virus is actually another worm. It is second only to the Mydoom virus in its scope. The $30 billion figure is a worldwide total, including Canada, the U.K., the U.S., mainland Europe, and Asia. Several versions of the worm were released in quick succession, named Sobig.A through Sobig.F, with Sobig.F being the most damaging. This cybercriminal program masqueraded as legitimate computer software attached to emails. It disrupted ticketing at Air Canada and interfered with countless other businesses. Despite its widespread damage, the creator of the successful bug was never caught.

3. Klez – $19.8 billion

Klez is a close third on the list of the worst computer viruses ever created. With nearly $20 billion in estimated damages, it infected about 7.2% of all computers in 2001, or 7 million PCs. The Klez worm sent fake emails, spoofed recognized senders and, among other things, attempted to deactivate other viruses. As with other viruses and worms, Klez was released in several variants. It infected files, copied itself, and spread throughout each victim’s network. It hung around for years, with each version more destructive than the last. Windows has come a long way since most of the computer viruses on this list hit the web. Thankfully, built-in protection with Microsoft Defender is always on the watch.

4. ILOVEYOU – $15 billion

The year 2000’s ILOVEYOU virus worked by sending a bogus “love letter” that looked like a harmless text file. Like Mydoom, this attacker sent copies of itself to every email address in the infected machine’s contact list. Shortly after its May 4 release, it had spread to more than 10 million PCs. The virus was created by a college student in the Philippines named Onel de Guzman. Lacking funds, he wrote the virus to steal passwords so he could log into online services he wanted to use for free. He reportedly had no idea how far his creation would spread. This virus is also known as Loveletter. Need to up your remote work security game before there’s another entry on the list of most deadly computer viruses? See our guide: How to Work Remotely and Securely

5. WannaCry – $4 billion

The 2017 WannaCry computer virus is ransomware, a virus that takes over your computer (or cloud files) and holds them hostage. The WannaCry ransomware ripped through computers in 150 countries, causing massive productivity losses as businesses, hospitals, and government organizations that didn’t pay were forced to rebuild systems from scratch. The malware raged like wildfire through 200,000 computers worldwide. It stopped when a 22-year-old security researcher in the U.K. found a way to turn it off. Computers with out-of-date operating systems were hit especially hard. That’s why security experts always recommend updating your systems frequently.

Ransomware strikes again

In September 2020, one of the potentially largest computer virus attacks in medical history hit Universal Health Services. The U.S. hospital chain, which has more than 400 locations, was reportedly struck by damaging ransomware. The attack forced the cancellation of surgeries and made healthcare workers switch to paper records.

6. Zeus – $3 billion

The Zeus computer virus is an online theft tool that hit the web in 2007. A whitepaper by Unisys three years later estimated that it was behind 44% of all banking malware attacks. By then, it had breached 88% of all Fortune 500 companies, 2,500 organizations total, and 76,000 computers in 196 countries. The Zeus botnet was a group of programs that worked together to take over machines for a remote “bot master.” It originated in Eastern Europe and was used to transfer money to secret bank accounts. More than 100 members of the crime ring behind the virus, mostly in the U.S., were arrested in 2010. It’s not as prominent today, but some of the virus’ source code lives on in newer botnet viruses and worms. Zeus caused documented damage of $100 million. But the real cost in terms of lost productivity, removal, and undocumented theft is undoubtedly much higher. A $3 billion estimate, adjusted for inflation, puts this virus at a cost of $3.7 billion in today’s dollars.

7. Code Red – $2.4 billion

First observed in 2001, the Code Red computer virus was yet another worm that penetrated 975,000 hosts. It displayed the words “Hacked by Chinese!” across infected web pages, and it ran entirely in each machine’s memory. In most cases it left no trace in hard drives or other storage. Financial costs are pegged at $2.4 billion. The virus attacked websites of infected computers and delivered a distributed denial of service (DDoS) attack on the U.S. White House’s website, www.whitehouse.gov. In fact, the White House had to change its IP address to defend against Cod Red. Can your printer get a virus? See our cool infographic: The State of Printer Security

8. Slammer – $1.2 billion

The SQL Slammer worm cost an estimated $750 million across 200,000 computer users in 2003. This computer virus randomly selected IP addresses, exploiting vulnerabilities and sending itself on to other machines. It used these victim machines to launch a DDoS attack on several internet hosts, significantly slowing internet traffic. The Slammer worm hit banks in the U.S. and Canada especially hard, taking ATMs offline in many locations. Customers of Toronto’s Imperial Bank of Commerce found themselves unable to access funds. The attack reared its ugly head again in 2016, launching from IP addresses in Ukraine, China, and Mexico.

9. CryptoLocker – $665 million

Thankfully, ransomware attacks like the 2013 CryptoLocker virus have dipped since their 2017 peak. This malware attacked upwards of 250,000 machines by encrypting their files. It displayed a red ransom note informing users that “your important files encryption produced on this computer.” A payment window accompanied the note. The virus’ creators used a worm called the Gameover Zeus botnet to make and send copies of the CryptoLocker virus. According to a report by security firm Sophos, the average ransomware attack costs a business $133,000. If we estimate that CryptoLocker hit 5,000 companies, that would put its total cost at $665 million. Where will cybersecurity go next? See our guide: The Future of Cybersecurity

10. Sasser – $500 million

The Sasser worm was written by a 17-year-old German computer science student named Sven Jaschan. He was arrested at the age of 18 in 2004 after a $250,000 bounty was posted for the computer virus’ creator. A friend of Jaschan’s tipped authorities that the youth had penned not only the Sasser worm but also the damaging Netsky.AC attack. Jaschan was given a suspended sentence after it was found he was a minor when he wrote the malware. The Sasser worm crashed millions of PCs, and though some reports put damages at $18 billion, the relatively low infection rate suggests a more likely cost of $500 million. Other notable viruses The top 10 worst computer viruses above are just the ugly tip of a gargantuan digital iceberg. With a million new malware programs popping up every 3 years, we may miss the forest for a few outstanding trees. Here are just a few more viruses that have wreaked havoc over the years: Mimail: This worm tried to harvest data from infected machines to launch a string of DDoS attacks, but was relatively easy to remove. Yaha: Yet another worm with several variants, thought to be the result of a cyber-war between Pakistan and India. Swen: Written in C++, the Swen computer worm disguised itself to look like a 2003 OS update. Its financial cost has been pegged at $10.4 billion, but not reliably. Storm Worm: This worm showed up in 2007 and attacked millions of computers with an email about approaching bad weather. Tanatos/Bugbear: A 2002 keylogger virus that targeted financial institutions and spread to 150 countries. Sircam: A computer worm from 2001 that used counterfeit emails with the subject line, “I send you this file in order to have your advice.” Explorezip: This worm used fake emails to spread to every machine on thousands of local networks. Melissa: The most dangerous computer virus in 1999, Melissa sent copies of itself that looked like NSFW pics. The U.S. FBI estimated cleanup and repair costs at $80 million. Flashback: A Mac-only virus, Flashback infected over 600,000 Macs in 2012 and even infected Apple’s home base in Cupertino, Calif. In 2020, there’s now more malware on Macs than on PCs. Conficker: This 2009 virus still infects many legacy systems and could do significant damage if it ever activates. Stuxnet: This worm is reported to have destroyed Iranian nuclear centrifuges by sending damaging instructions.