Computer history viruses

It reached Europe, the US, and Asia. The authors released several Sobig versions quickly known from Sobig. A to Sobig. The last one was the worst. It disrupted the activities of many businesses worldwide , with the Air Canada ticketing being the most famous problem during its time.

Klez appeared even earlie r than the two previous worms in Klez would send fake emails, spoof known senders , and kill other viruses within a system. Klez came in many flavors, as other viruses and worms often do. During all this time, it kept evolving to release more dangerous iterations.

During the s , this dangerous computer virus would arrive in your inbox disguised as a love letter. But, then, it seemed to be nothing but a plain text file. Iloveyou aka Loveletter hit the internet on May 4th. And it must have found the force within it because it reached 10 million computers very quickly.

The author was Onel e Guzman, a college student from the Phlippines. However, it seems that he never intended for his work to spread so much or to do so much damage. The WanaCry is the first ransomware on our list. It takes over your computer or cloud files , encrypts them to make them unavailable to you.

Then it asks for you to pay a ransom hence, the name to receive the decryptor to unlock your data. WanaCry arrived at the computers of countries in a single day. It hit all kinds of organization s hospitals, governmental offices, private businesses , causing massive disruption. Fortunately, Marcus Hutchins , a year-old security expert in the UK, eventually found a way to neutralize WannaCry. The WannaCry episode illustrated how the most outdated operating systems are vulnerable to attacks.

That is why updating your system is a standard security practice. The Zeuz theft tool hit the web for the first time in It was more like a suite , and it included several programs that composed the global Zeus botnet.

Zeuz arose from Eastern Europe and transferred money into secret bank accounts. There was no single, lonely, poor programmer behind Zeuz. Instead, it had an entire organization supporting and profiting from it. In , more than members of the virus crime ring were arrested.

Zeuz is not as prominent at present, but it spawned a new generation of malware as other developers used pieces of the Zeuz code to integrate into their own, more recent, worms and viruses. Zeuz-related documented damage ascended to million USD. The costs in terms of lost productivity, morale, and undocumented theft must be several times higher. If we estimate all that damage and adjust for inflation, Zeuz costs at least about 4 billion USD while active.

Unfortunately, it left no trace in the hardware like files on a hard drive , which complicated the forensic analysis. Slammer would select an IP address at random and explore the security vulnerabilities in the target system. If it found the target environment feasible for the attack, it would replicate to the target system.

Once it had a good number of infected computers ready, it launched DDoS attacks on some selected internet servers, thus ruining their traffic. Banking computers in the US and Canada had the worse experience with Slammer. The worm even forced ATMs to go offline in multiple places.

No definitive solution was ever found to prevent SQP Slammer infections. In fact, saw the attack surface again from computers located in Mexico, China, and Ukraine. The estimated number of systems with a CryptoLocker infection is about a quarter million. It seems you can write excellent and effective code without mastering English.

This message comes along a payment demand, leaving no doubts about what to do next: you pay for the privilege of deciphering your very own files, or you lose all control over your system.

CryptoLocker used the Gameover Zeus botnet to distribute and install millions of CryptoLocker copies in vulnerable systems. Sophos Security estimates the cost of average ransomware hit at , USD. If we estimate additionally that CryptoLocker successfully attacked some corporations, the total cost would have been around million USD, give or take a lot. Sven Jaschan was a computer science student in Germany, 17 years old. By the time he got arrested in , he was already of age.

There was a , bounty on his head , as the creator of Sasser. However, one of his friends blew the whistle on him. Instead, he also created the Netsky. The legal system gave Mr. Jaschan a suspended sentence when it became clear that he was a minor as he was writing the code.

Sasser crashed millions of computers globally, and with an apparently low infection rate, it incurred damages of around million USD. Melissa is a name in Greek mythology, and it refers to the first honey bee. But in , there was also a Florida exotic dancer called Melissa who caught the attention of David L.

Smith, the author of the eponymous computer virus. This one started as an infected Word document that the author posted to the Usenet. He persuaded thousands of Usenet lurkers to download it, claiming it was a list of working passwords for adult websites. Eventually, the unavoidable incident happened as people downloaded the file and opened it.

That all changed in when the Michelangelo virus was unleashed onto the world. The Michelangelo virus was a destructive worm that would spread onto any floppy disk inserted into the computer, while remaining dormant and undetectable. But then on the titular painter's birthday, March 6th, it would activate and absolutely ruin any computer infected with it. While there was nothing especially unique about the Michelangelo virus, it was soon discovered that a few computer and software manufacturers accidentally shipped products with Michelangelo pre-installed onto them.

The actual number of infected computers was never more than 20, But John McAfee, founder of McAfee antivirus and… interesting fellow, made the expert claim that hundreds of thousands, if not millions of machines were infected.

Which may have been a motivating factor in him riling up the public. The document, which was a DOC file, included a list of 80 pornographic websites as well as usernames and passwords to access each one which must have been confusing to get from Grandpa.

This meant that oftentimes classified or private files would be shared with friends, family, or work associates. Melissa would be contained fairly quickly, and its creator arrested, but perhaps its most important legacy is how it directly inspired one of the biggest malware attacks even to this day, ILOVEYOU , or the Love Letter worm.

Sent through an email disguised as a love letter, ILOVEYOU's attack would begin upon the opening of the attached text file, unleashing a worm that would cause far more damage than your typical worm — even compared to the malware of today. ILOVEYOU would download a Trojan as soon as it was activated, which would then overwrite files, steal user data such as usernames, passwords, IP addresses , and more, then send itself to everyone on your email contact list.

Then, it would effectively lock you out of your own email address. Not only to the impact malware could have on the unprotected, uninformed masses, but also all the things malware was capable of doing given enough free reign. Companies who had long since viewed security as a secondary concern started shifting priorities, and antivirus products , once seen as a nice luxury, became absolutely essential. But just as there are brilliant hackers who are trying to steal from you, there are just as many brilliant cybersecurity researchers who are working to keep you safe with products like AVG.

So as long as you pay attention, keep your antivirus updated , and continue to learn more about cybersecurity, you can feel secure every time you log on. Get it for Android , iOS , Mac. Get it for Mac , PC , Android. To learn more about viruses, and to make sure your devices remain virus-free, check out our detailed guides:.

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For settings and more information about cookies, view our Cookie Policy. Security Tips. AVG News. See all Security articles. The first viruses were technological demonstrations and the motivation of their creators was research.

In , Brain appeared, a virus created by two Pakistani brothers whose purpose was to punish the users who installed a pirated copy of software. Credit: Christiaan Colen. More publications related to this article Digital World. Is the Cloud a Hacker's Paradise? Digital World. Mikko Hypponen: Who Owns the Internet? Artificial Intelligence. The True Father of Artificial Intelligence. Comments on this publication Login to comment Log in Subscribe. Thank you for collaborating with the OpenMind community!

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