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 historyIn 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.
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.
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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.
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.
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.
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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.
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.
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.
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
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.
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
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.
Valve has announced the first gaming PC handheld console: Steam Deck. At its core, Stead Deck is just a portable, small PC in little casing. It uses AMD Zen 2 CPU and RDNA 2 GPU architecture, has 16GB of RAM, Wi-Fi, and Bluetooth.
It is a portable device with both a touchpad and joystick packing a seven-inch screen with a resolution of 1280x800 (16:10 aspect ratio). The screen has an ambient light sensor for automatic light adjustments same as your modern mobile device.
Stating to Valve battery will hold up from two to eight hours depending on the activity of the user and what exactly he is doing. The handheld comes also with a carrying case.
Task View feature inside Windows 11 is actually a great feature, letting you quickly view open windows and virtual desktops. How Task view itself could be reached with keyboard shortcut combination of ⊞ WINDOWS + TAB some users will prefer this way of using it and thus button on the taskbar is something you do not want or need.
There is a very easy way to remove mentioned button and I will show you how to do it.
Right-click the taskbar button itself and click on Hide From Taskbar.
That’s it, you have done it.
Now in order for you to bring it back if you change your mind, you will have to do some extra steps but it is nothing difficult.
Right-click on the taskbar and click on Taskbar settings, you will be lead to Personalization > Taskbar.
Inside locate Taskbar Items and switch Task View to ON, you will see the Task View button right away showing itself again. Besides this, you may also experience this error message when you format a hard disk drive to install Windows 7.“An internal error has occurred: The parameter is incorrect: (0x80070057)”
Error CausesError CausesCode 29 is a Device Manager error commonly seen whenever a hardware device driver reports a problem. This error code indicates that the resources needed for operation are not available.
The computer hardware basically requires drivers to interface with the operating system. Drivers comprise multiple components and are supplemented with other resources provided by the BIOS (a physical chip on the motherboard).
The BIOS contains a set of basic input and output instructions for the computer system to boot, load drivers, and more.
Its firmware provides resources that drivers require to interface with other essential components. However, when the firmware fails to provide the requested resources, the device drivers stop functioning; this results in error codes like code 29.
Error code 29 is usually displayed in the following format:
“This device is disabled because the firmware of the device did not give it the required resources” Code 29
Error CausesError code 29 may be triggered due to several reasons. These include:
To avoid inconvenience and to ensure your computer keeps working at its optimal pace, it is recommended that you repair error code 29 on your PC immediately. Delay may limit you from using certain hardware attached to your system properly.
To repair error code 29, you don’t have to hire a professional and spend hundreds of dollars. Here are some quick and effective DIY methods that you can try to resolve this issue in minutes even if you don’t have any technical background.
Sometimes, error codes like code 29 may pop up on your computer screen due to some temporary glitch with the hardware. Rebooting can resolve the issue easily.
Therefore, before you do anything, try restarting your PC. It could be all you need to repair code 29. However, if the error code continues to persist, try the other methods given below.
This may sound technical but it isn’t. To begin, with CMOS is an acronym for Complimentary Metal Oxide Semiconductor.
It is a term that is used to describe motherboard memory that contains the BIOS settings. Clearing CMOS helps reset the BIOS settings to their default manufacturer levels. It’s easy to do and is an effective troubleshooting step to resolve error code 29.
To do this, simply:
Error code 29 may appear if a device is disabled. In such a scenario, simply follow the same steps as discussed in method 2, and in the advanced BIOS settings, look for disabled devices.
Enable the devices in the BIOS so that you use them easily.
This will hopefully resolve the issue. If it doesn’t, then this means the error code 29 is caused by either corrupted or outdated drivers. Try method 4 to resolve this issue successfully.
Whether the error code 29 is caused by a misconfigured, corrupted, or outdated driver, simply update the new driver version to resolve. When doing it manually, you will first have to find and identify the problematic device drivers in the Device Manager.
You can access the Device Manager by going to the start menu and then simply typing Device Manager in the search bar.
Access the Device Manager and the properties to identify problematic drivers. Problematic drivers are normally displayed with a yellow exclamation mark.
Once you have spotted problematic drivers, simply update new drivers to resolve them. Though there is nothing technical about it but it may be time-consuming.
A good alternative to manual driver update is DriverFIX. Simply download and install DriverFIX on your PC to update all problematic drivers in seconds. This is a cutting-edge program designed to resolve all kinds of device driver problems.
It is user-friendly and compatible with all Windows versions.
The intelligent programming system deployed inside this software program enables it to identify and detect all problem drivers automatically thereby sparing you from the hassle.
Furthermore, it also matches the drivers with the latest and compatible versions and updates them on a regular basis.
It takes the guesswork out of finding misconfigured and corrupted drivers and fixes driver-related problems and error codes like code 29 right away.
Click here to download DriverFIX to repair Device Manager error code 29 on your system without any hassle.
Speaking of old players of old Diablo 2, they can transfer their old characters into remaster and continue playing them within this new great HD environment. There are some steps and requirements but we are here to help and transferred characters will bring full stash, inventory, and equipped items with them.
