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• Researchers make wormy Twitter attack

  Computer security researchers have devised a new Twitter attack that they say could spread virally, much like a worm on the microblogging service.

• Microsoft puts the kibosh on Facebook worm Koobface

  Microsoft is trying to stamp out the Koobface worm, which has spread aggressively on social networking sites such as Facebook and MySpace, the company said Tuesday.

• Conficker Worm Strikes Back With New Variant

  The Conficker/Downadup worm managed to slither onto millions of PCs worldwide at its height, but after it initially infected a computer it only really acted to spread itself, and didn't cause further harm. Until now.

• Symantec identifies third Downadup/Conficker variant

  A third version of Downadup has been identified by Symantec, which says the new variant gives infected machines more powerful instructions to disable anti-virus software and analysis tools, among other actions.

• Koobface worm to users: Be my Facebook friend

  A worm that hit Facebook last December has resurfaced, a security researcher said today, and is now hijacking user accounts -- not only for that social networking service, but also for MySpace, Friendster, LiveJournal and others.

• Conficker worm gets an evil twin

  The criminals behind the widespread Conficker worm have released a new version of the malware that could signal a major shift in the way the worm operates.

• With global effort, a new type of worm is slowed

  There have been big computer worm outbreaks before, but nothing quite like Conficker.

• Microsoft, Symantec, VeriSign join forces to fight Downadup worm

  Nearly 20 technology companies and organizations are combining forces to disrupt the command-and-control infrastructure of the rapidly-spreading "Downadup" worm, prompted by infection rates of nearly 2.2 million machines each day.

• Microsoft puts $250,000 bounty on Conficker worm

  Microsoft is trying to put some pressure on the criminals responsible for the worst Internet worm outbreak in years, offering a US$250,000 reward for information leading to the arrest and conviction of Conficker's creators.

• Conficker worm sinks French navy network

  A highly disruptive Internet worm has claimed a new victim: the French navy.

• Kaspersky, OpenDNS collaborate to slow Conficker worm

  OpenDNS has added a feature to its Domain Name System (DNS) services to fight a widespread worm, with help from Russian security company Kaspersky Lab.

• Worm floats Obama's head on your desktop

  The odds are pretty good that this will never happen to you, but should a floating head of U.S. President Barack Obama pop up on your desktop Monday morning, know this: You've been hit with the Obama worm.

• Researchers wait for Downadup worm's second act

  The worm that's infected millions of Windows PCs is a "very well-engineered" piece of malware, according to one security expert. But researchers still have no clear idea what the hackers plan to do with the collection of computers they've compromised with "Downadup."

• Protecting Against the Rampant Conficker Worm

  Businesses worldwide are under attack from a highly infectious computer worm that has infected almost 9 million PCs, according to antivirus company F-Secure.

• 'Amazing' worm attack infects 9 million PCs

  Calling the scope of the attack "amazing," security researchers at F-Secure Friday said that 6.5 million Windows PCs have been infected by the "Downadup" worm in the last four days, and that nearly nine million have been compromised in just over two weeks.