Slammer is the kind of virus that makes it into films, as only a few minutes after infecting its first victim, it was doubling itself every few seconds.
Slammer, quite aptly, caused a huge panic as it had effectively managed to crash the internet in 15 quick minutes. Stuxnet is easily the scariest virus on the list as it was built by government engineers in the US with the intention of obstructing nukes from being built in Iran. Stuxnet spread by a USB thumb drive and targeted software controlling a facility in Iran that held uranium. Stuxnet is the first real venture into cyberwar and it definitely asks the question as to what will come next.
So there you have it: while viruses and malware might seem like a myth drummed up by tech companies, they are a very real threat that have caused billions in damage. Sort: Most Recent Reviews. Please sign in to your account to enter additional information for monitoring purposes. No one can prevent all cybercrime or identity theft.
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Other names may be trademarks of their respective owners. Internet Security Centre. Norton UK Blog. CryptoLocker When it comes to malware, ransomware is the new kid on the block. But why was it so brutal? Source: Shutterstock Well, in malware was a bit of a myth. MyDoom MyDoom is considered to be the most damaging virus ever released—and with a name like MyDoom would you expect anything less? Tip: never open a link in an email unless you know exactly what it is.
Cost of the malware: An exact cost is yet to be calculated. The two were never charged, as there were no laws about malware. This led to the enactment of the E-Commerce Law to address the problem. Code Red first surfaced on and was discovered by two eEye Digital Security employees. The worm targeted computers with Microsoft IIS web server installed , exploiting a buffer overflow problem in the system.
It leaves very little trace on the hard disk as it is able to run entirely on memory, with a size of 3, bytes. Once infected, it will proceed to make a hundred copies of itself but due to a bug in the programming, it will duplicate even more and ends up eating a lot of the systems resources. It will then launch a denial of service attack on several IP address, famous among them was the attack on the White House website.
It also allows backdoor access to the server, allowing for remote access to the machine. The most memorable symptom is the message it leaves behind on affected web pages, "Hacked By Chinese!
A total of million servers were affected, which is amazing when you consider there were 6 million IIS servers at the time. Named after an exotic dancer from Florida, it was created by David L. Smith in It started as an infected Word document that was posted up on the alt. This got people curious and when it was downloaded and opened, it would trigger the macro inside and unleash its payload. It also sometimes corrupted documents by inserting a Simpsons reference into them.
Smith was eventually caught when they traced the Word document to him. The file was uploaded using a stolen AOL account and with their help, law enforcement was able to arrest him less than a week since the outbreak began.
He cooperated with the FBI in capturing other virus creators, famous among them the creator of the Anna Kournikova virus. A Windows worm first discovered in , it was created by computer science student Sven Jaschan, who also created the Netsky worm. While the payload itself may be seen as simply annoying it slows down and crashes the computer, while making it hard to reset without cutting the power , t he effects were incredibly disruptive, with millions of computers being infected, and important, critical infrastructure affected.
The worm took advantage of a buffer overflow vulnerability in Local Security Authority Subsystem Service LSASS , which controls the security policy of local accounts causing crashes to the computer. It will also use the system resources to propagate itself to other machines through the Internet and infect others automatically.
This led to more than a million infections , taking out critical infrastructures, such as airlines, news agencies, public transportation, hospitals, public transport, etc. Jaschen was tried as a minor and received a 21 month suspended sentence. Zeus is a Trojan horse made to infect Windows computers so that it will perform various criminal tasks.
Netsky spread via e-mail and Windows networks, creating large amounts of Internet traffic and causing Denial of Service DoS attacks.
Sasser replicated by finding other systems with vulnerabilities and forcing them to download the virus. Once on a new machine, it altered the operating system to make it difficult for users to shut down their computer. This worm was unique in that it had a timer of sorts. The virus started Denial of Service attacks, then stopped distributing itself 11 days later. These attacks were aimed at various Internet servers, including attacks against search engines, causing several of them to crash and others to return search results much slower than normal.
Once this worm got onto a network, it spread quicker because firewalls often didn't block internal machines from using a port the worm utilized. It was stopped by filtering by ISPs and public awareness. A prolific web server virus, the Slammer also known as Sapphire infected nearly half of the servers that help run the Internet 15 minutes after its initial attack.
Spreading through e-mail and Web pages, this worm targeted Internet servers, slowing Internet performance nearly to a halt. It also opened a backdoor to the computer's operating system, allowing a hacker access to the computer.
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