Post-April Fool’s Day Conficker update

In the last few weeks, the Internet has been rife with rumors about how the Conficker worm was set to explode (or at least release a mysterious payload) on April 1.

April 1, 2009 is now in our rear view mirror and so far not much has changed.

Microsoft recognizes that crime on the Internet is a problem. We are working with technology industry leaders and academia to coordinate a global approach to combating the Conficker worm.

Microsoft researchers, along with partners in the Conficker Working Group, have been watching closely (and will continue to watch closely). So far they don’t report any new malicious activity from Conficker. According to a recent post on the Microsoft Security Response Center (MSRC) blog, they haven’t seen any actions outside of what they expected.

Still worried about Conficker? Follow these steps:



Visit Microsoft Update to verify your settings and check for updates




If you can’t access Microsoft Update, go to and scan your system.




If you can’t go to, contact support at 1-866-PCSafety or 1-866-727-2338. This phone number is for virus and other security-related support. It is available 24 hours a day for the U.S. and Canada. For support in other countries, visit the Worldwide computer security information page.


For more information, see or the Microsoft Security Response Center blog and the Microsoft Malware Protection Center blog.

If you’re still concerned about Conficker, you can get more information and free support by going at

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About the Author
Eve Blakemore

Group Manager, Trustworthy Computing

Eve Blakemore is a Group Manager for Trustworthy Computing who delivers consumer guidance around the latest trends in security and privacy. Eve joined Microsoft in 1998 and has worked in corporate and field roles with Microsoft Learning, US Public Sector, Read more »