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Stuxnet

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Stuxnet is one of the most famous computer worms that was discovered several years ago, in the middle of 2010. The first time when Stuxnet was noticed, it was targeting Iranian nuclear facility with a reason to injure country’s uranium enrichment program and prevent President Mahmoud Ahmadinejad from building a nuclear weapon. As you can see, this is not a typical worm - instead of trying to steal credit card details, passwords or other sensitive information, Stuxnet is launched against industrial systems. According to security experts, this threat has a great potential to be used for physical destruction.

It seems that attackers have designed this digital worm with a great care so that it wouldn't hit those computers and networks that do not meet specific configurations. According to some security experts, it is also set to apply some self protection tips, like easing itself on June 24 2012 and similar. The way how targets get infected with Stuxnet is really unprecedented - this virus has already used four zero-day vulnerabilities. In addition, this half a megabyte in size virus can also infect system through the removable drives, such as USB drive or similar.

In the end of last year, security experts noticed a new threat (duqu) that seems to be created from the same code base as Stuxnet. However, having almost identical code base, this virus seems to be released for completely different reason than its predecessor – it seems to be designed for information theft.

Other Viruses in the Stuxnet family

Videos

Stuxnet How It Infects PLCs05:45

Stuxnet How It Infects PLCs

Worm.Win3206:29

Worm.Win32.Stuxnet (April Fools Day Video)

Sources

Video on how stuxnet infects PLCs [1]

Article about Stuxnet on PC MAg [2]

Deciphering Stuxnet [3] Trojan horse

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