On the morning of Saturday, March 20th, a flawed BitDefender update was automatically pushed out to all 2008, 2009 & 2010 users. Following this event, it was discovered that BitDefender was falsely detecting several Windows and BitDefender files as infected with the Trojan.Fakealert.5 virus.
As a result, there were reports of BitDefender and/or Windows and/or certain programs becoming inoperable, as well as PCs failing to boot.
BitDefender promptly released a new automatic update which fixes these issues.
Read more: WinMatrix
Read more: BitDeffender