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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.

Once a tedious and unfriendly task of installing fonts has been severely made easier and more user-friendly. As technology advances daily so do some tasks. One of these tasks which today look unnecessarily complicated is fonts installation in Windows. What was once complicated navigation to control panel with an administrative account, today is two-click with the mouse anywhere, well anywhere on your hard drive, but still a great improvement nonetheless. Ok, so you have found cool new font which you like very much and you are eager to try it out, but how do you install it in Windows so your other software can find it and use it? The task is incredibly easy, let's presume that you have downloaded desired font or fonts to your hard drive from the internet, they are nicely placed in a folder, all you have to do is select which one you would like to install, right-click on any one selected and click on install. That's it, that is all that you need to do. Now in order to remove fonts first, you will have to go to the folder which has all fonts installed in the system. The location of this folder is conveniently enough c:\Windows\Fonts. In there select all fonts that you would like to uninstall from the system and simply delete them, that's it.

One of the useful features that came with Windows 10 is the Mobile Hotspot although there’s a downside to it – it drains your battery faster especially if your Windows 10 device is running on battery. Another one of its flaws in the implementation of this feature is that it stays activated even when the connection is idle. In other words, it is still activated even if no devices are connected to it. As a result, it consumes battery life and affects it. There are also instances when it affects the performance of the network connection. At the time of writing, Microsoft hasn’t done anything about this dilemma yet so in the meantime, you can continue reading this post to resolve this issue on your Windows 10 device. You can remedy this Mobile Hotspot issue by running a command in Windows PowerShell. To get started, follow the given instructions below.

Turn off Mobile Hotspot Automatically:

Step 1: The first thing you have to do is to copy the following command:

powershell -windowstyle hidden -command "Start-Process cmd -ArgumentList '/s,/c,net stop "icssvc" & REG ADD "HKLMSYSTEMCurrentControlSetServicesicssvcSettings" /V PeerlessTimeoutEnabled /T REG_DWORD /D 1 /F & net start "icssvc"' -Verb runAs"

Step 2: After copying the command given above, open the Notepad app and paste the command you copied there and save it. And when saving it, select the “Save as” option and its File type as “All files”. Step 3: After that, put “TurnOnTimer.bat” as the file’s name and save it on your Desktop. Step 4: Once done, run the file you just created, and when a User Account Control or UAC prompt appears, just click on Yes. Step 5: After you run the file, it will run a series of scripts in a command line which will turn off the Mobile Hotspot automatically when idle. And that’s how you automatically turn off the Mobile Hotspot when your Windows 10 device is idle. On the other hand, if you want to undo the changes made, you can always do so using the steps provided below.

Turn on Mobile Hotspot:

Step 1: Copy and paste the following command in the Notepad app:

powershell -windowstyle hidden -command "Start-Process cmd -ArgumentList '/s,/c,net stop "icssvc" & REG ADD "HKLMSYSTEMCurrentControlSetServicesicssvcSettings" /V PeerlessTimeoutEnabled /T REG_DWORD /D 0 /F & net start "icssvc"' -Verb runAs"

Step 2: After copying and pasting the command, save it as “TurnOffTimer.bat” on the Desktop. Step 3: Once done, run the file like what you did earlier and select Yes when a UAC prompt pops up. This will run a series of scripts on a command line which will revert the changes back to their default state.

In case you don’t know, when you visit a website that uses HTTPS, it also offers an SSL certificate to the browser in order to verify the website’s identity. Although it may contain lots of things inside it, one of them is the URL of the website. So if the certificate does not match the URL to what you entered, you will most likely get the “Server’s certificate does not match, ERR CERT COMMON NAME INVALID” error which indicates that the connection is not private and the site may try to steal your data but worry not, as this post will guide you in resolving this issue. To fix the ERR_CERT_COMMON_NAME_INVALID error, here are some suggestions that might help.

Option 1 – Check the website’s certificate

If you own the website where you’re getting the error, then you might have to check if the website’s certificate is installed properly and configured on the server as it could be the reason why you’re suddenly getting the error.

Option 2 – 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_CERT_COMMON_NAME_INVALID error. There are instances when some third-party application modifies the file and adds some websites to the blocklists. So if the website is indeed blocked, you need to remove it from the list.

Option 3 – Use the Google Public DNS

You might want to change your DNS to Google Public DNS as it could also help you in fixing the ERR_CERT_COMMON_NAME_INVALID error in Chrome. To do so, follow the steps below.

• The first thing you have to do is right-click on the network icon in the Taskbar and select Network and Sharing Center.
• Next, click on the “Change Adapter Settings” option.
• After that, search for the network connection that you are using to connect to the internet. Note that the option might be “Wireless Connection” or “Local Area Connection”.
• Right-click on your network connection and click on Properties.
• Then select the new window to choose the “Internet Protocol 4 (TCP/IPv4)” option.
• After that, click on the Properties button and click the checkbox in the new window for the option “Use the following DNS server addresses”.
• Type in “8.8.8.8” and “8.8.4.4” and click OK and exit.

Option 4 – Run the built-in Malware Scanner and Cleanup Tool in Chrome

In case you don’t know, there is actually a built-in malware scanner and cleanup tool in Chrome that helps you get rid of any unwanted ads, pop-ups, and even malware, as well as unusual startup pages, toolbars, and other things that could affect the performance of the browser. In addition, this built-in tool in Chrome might also help in fixing the ERR_CERT_COMMON_NAME_INVALID error.

Option 5 – Reset Chrome

Resetting Chrome can also help you get rid of the error. Resetting Chrome means restoring its default settings, disabling all the extensions, add-ons, and themes. Aside from that, the content settings will be reset as well and the cookies, cache, and site data will also be deleted. To reset Chrome, here’s what you have to do:

• Open Google Chrome, then tap the Alt + F keys.
• After that, click on Settings.
• Next, scroll down until you see the Advanced option, once you see it, click on it.
• After clicking the Advanced option, go to the “Restore and clean up option and click on the “Restore settings to their original defaults” option to reset Google Chrome.
• Now restart Google Chrome.

Windows has tendencies to remember WIFI passwords so it can reconnect automatically to them. But from time to time we change passwords and Windows does not let us change it since he has network remembered. In this case, we will not be able to connect to the internet. In this helpful guide, we will let you know which steps you will need to take in order to solve this issue and to be able to connect to the internet again.

1. Restart Modem

   First thing first, restart your modem. Windows might see it as a new network and offer you to type in the password for it.

2. Update driver

   Sometimes the issue could be due to driver problems, open device manager and update WIFI driver or reinstall it.

3. Reset WIFI password

   Press ⊞ Windows + R type “Control” > hit Enter. Now click Network and Internet > Network and Sharing Center > Change adapter settings. Right-click on the connected Wifi and select Status. Click Wireless Properties, change the password from the Network security key section, and then click OK to reset your WiFi password.

4. Forget the network

   Click on Start > Settings > Network & Internet > Wi-Fi. Click the Manage known networks link Select the network you are looking for Select Forget.

5. Delete your WIFI profile

   Press ⊞ Windows + X to open the secret menu and click on Command prompt (admin) In command prompt windows type: netsh wlan show profile netsh wlan delete profile name=<profile name> Reboot

RAM drive is basically a hard drive made of your RAM memory. Altho this kind of drive can not and is not available to save any data when the computer is shut down its advantage is lightning fast speed since the application is installed in RAM itself, it is loading from there and executing from there. Creating this kind of drive which will use your RAM memory, well part of it can not be done natively in Windows, you will need some kind of application for this task. Luckily there is a free open source application for this kind of task. ImDisk, you can download the application here. ImDisk Toolkit is an application for managing virtual drives. It also includes a utility that allows the creation of RAM drives. Download the application and install it, make sure that you select all components on the installation selection screen. After installation is finished double click on icon labeled RamDisk Configuration. Once the application is running adjust the disk size in the box at the top of the window for your RAM drive. Click “OK” at the bottom of the window. This will create your RAM drive, which is just a virtual disk that’s assigned to your computer’s RAM. The process happens transparently, so there’s nothing you need to do. If you get a warning about shutdown settings, click on the “Shutdown Settings” button. Then unlock the settings pane with your administrator password. Finally, uncheck the checkbox next to “Turn on fast startup (recommended)” and click “Save Changes” at the bottom of the window. Your RAM drive is now ready for use. Fast Startup speeds up the process of turning on your computer by saving a system state between completely off and hibernation to your hard drive. This happens when the computer writes the contents of your RAM to a stable hard drive. As you may guess, this could mess with your RAM drive’s ability to preserve and track its data. With Fast Startup off, boots may take slightly longer, but it’s doubtful that you’ll notice much. Disabling a fast startup will satisfy the warning window, but let’s consider why. This will also allow ImDisk to save your RAM drive’s data to an image file when you shut down your computer. If you don’t, the contents of your RAM drive will be erased completely every time, with no saved image storage. It would also disable the RAM drive’s ability to load the previous content. Basically, the drive would act much more like RAM and much less like a disk. Depending on your use case, that may be disappointing or unusable. You can access and use it just like any normal hard drive. It shows up in Windows’s file explorer just like any other drive. However, a Ram drive is exponentially faster than traditional types of storage. And we mean exponentially. Whereas an SSD might offer 300 to 500 MB when reading from the disk, a RAM drive can offer more than 5000 MB, even on mediocre memory sticks.

Stop 0x00000050 is an error code that is popularly known as the Blue Screen of Death (BSoD) error. This error occurs when Windows crashes on your system. Stop 0x00000050 error is displayed in a blue screen which is why it is called the BSoD error.

The error message appears in the following form:

Stop 0X00000050 (parameter1, 0, parameter3, parameter4)

PAGE_FAULT_IN_NONPAGED_AREA”

However, the parameters within the Stop 0x0000005 error message sometimes vary depending on your PC configuration.

Solution

Error Causes

The most common causes of the Stop 0x0000005 error are:

• Hardware malfunctioning
• Overheating of the components
• Installation of a faulty device driver
• Incompatible DLL files
• Corrupt Registry
• Spyware and Virus Infection

Whatever the cause may be, the Stop 0x00000050 error message is alarming and should be fixed at the earliest as it indicates major system stability problems that can often lead to data loss and system corruption.

Further Information and Manual Repair

To fix and repair the Stop 0x0000005 error you don’t always have to hire an IT professional. In fact, fixing this error is quite easy and you can do it yourself regardless of whether you have a good know-how of computers or not.

So, let’s get started! Here are some the easy DIY solutions to fix the Stop 0x0000005 error:

Sometimes this error may occur due to a temporary issue like overheating of the computer components. When this happens all you need to do is switch off the computer and allow the components to cool down. Try starting up your computer after a couple of hours. If the blue screen of death does not occur again, then this means there is nothing to worry about and the problem is resolved.

However, if the error appears again on your screen, then you need to try something else to solve and fix this error on your PC. If the cause of the error is a faulty device driver, then it is advisable to disable and remove it. Try updating the latest version of the faulty device driver. Using updated software helps ensure your PC keeps running smoothly.

If the cause of the Stop 0x0000005 error code is your system's exposure to viruses and spyware, then you must immediately download a powerful antivirus program. After you download it, scan for viruses on your system. Once the scanning is complete, you will see a scan report showing viruses on your PC. Delete all of them and click on repair.

Furthermore, you can also add more RAM to prevent and fix the Stop 0x0000005 error message on your computer. This solution is suitable when you try to run a program on your PC and you get this error message.

Microsoft has officially announced details about the newest upgrades to its office 365 suite moving forward along with its new OS release. It seems that Microsoft has listened to its user base and feedback since Word, Excel, and PowerPoint are getting much-needed redesign taking into account many suggestions from the community. The new office should feel more like an application suite guiding focus on the interconnection of applications themselves providing users with a much more natural experience of using them.

The new office features so far

From Microsoft themselves:

“This Office visual refresh is based on feedback from customers who asked for a more natural and consistent experience within and between your applications, specifically on Windows. With this update, we deliver an intuitive, coherent, and familiar user interface, using the Fluent Design principles, across all your applications: Word, Excel, PowerPoint, OneNote, Outlook, Access, Project, Publisher, and Visio. We aligned this visual refresh with the design of Windows 11 to provide seamless experiences on your PC.”

It is always refreshing to hear when a company listens to its user base and actually does what is needed instead of trying to invent the wheel.

How to switch

Since beta is already rolling and if you have an active 365 subscription to office suite visual refresh will be automatically available to all Office insiders running beta channel builds. It can be turned on and off using the coming soon feature in the top right corner of the menu in any application. Just click on the megaphone icon to open the coming soon pane and apply settings to all office apps. Note that The Coming Soon feature is not available in Access, Project, Publisher, or Visio. If you turn on the visual refresh in any of the 4 apps mentioned above (Work Excel, PowerPoint, or OneNote), it will also be available in these 4 apps.

Difference themselves

The Home tab menu still has a familiar look with a few tweaks. For example, accessing frequently used Word commands will be a lot easier. By navigating to Designer > Show Quick Access Toolbar, users can add a customizable shortcut ribbon to Word that houses conveniently placed options. Also, the office will not match your Windows operating system color theme so if you have a dark theme enabled, the office will also have a dark color theme. Color palettes are more neutral, corners are a bit softer but customizable ribbons are a win here for me.

Conclusion

There was not much said other than visual upgrades and small tweaks that were supposed to make your life easier but then again Windows 11 itself is in the same boat. I am not sure if this is a great update offering just some visual tweaks and focus on workflow mechanics or just being plain lazy and trying to cash in visuals as a completely new product.

Sharing is caring, an old saying says. I completely agree and that is reason enough for this article filled with sharing goodness. Holidays are coming and I hope that the holiday spirit is strong with you, that you will spend them in peace and with loved ones. All that being said wouldn’t it be great if you can spend some joy with close ones and share some of your games on their account so they can enjoy them as well? Well, you can and it is not complicated as well. Follow this easy guide to see how can you get someone’s account up and running with some of your games.

The steam Family sharing feature

The family Sharing feature inside Steam will let you share your games to another account so owners of that account can play games that you have purchased without the need to buy themselves. You can allow up to 5 accounts and 10 devices to play your library games, and owners of these accounts will have their own achievements. Be aware that enabling this option will place your entire library on the share, you will not be able to choose which games you would like to share and therefore any kind of parental controls are not applying here. Also know that once the game is running on one device, others will have to wait for one playing to finish before they can get a spin on it. Only the owner of the game can play whenever he wants as a priority but others will have to wait for the game to be not run by someone else.

How to Share Your Game Library

In order to share your game library have a person, you wish to share games with at his device on ready to go and enable steam guard on your account. To enable steam guard login into your account and on the top left corner click on Steam and then on Settings. Inside settings click on the Manage Steam Guard Account Security button. Choose the way of authentication either by mail or steam guard mobile app. Check Get Steam guard codes by email radio button and re-login into account.

Sharing Games on another Steam account

Now that Steam Guard is enabled on the primary account let’s share some games!!! Inside client again, in the top left click on Steam and again on settings. In the left panel choose and click on Family. Inside Family section check box beside Authorize Library Sharing on This Computer. Log out of your account and login into the client user account credentials you wish to share your library with (this is your friend or cousin account, they need to log in to Steam client on your computer but with their credentials). After they have successfully logged in, log them out and re-log with your account again. Now go again into Steam > Family and now you should see an account in the box at the bottom with the user name or your friend or relative. Confirm that this is an account that you wish to share the library with by clicking on the checkbox next to the name. Now let users login into the desired device with their credentials and they will have access to your entire library. Happy gaming!