“A new sleeper virus that could allow hackers to steal financial and personal information has now spread to more than eight million computers in what industry analysts say is one of the most serious infections they have ever seen,” Barry Neild reports for CNN.

“The Downadup or Conficker worm exploits a bug in Microsoft Windows to infect mainly corporate networks, where — although it has yet to cause any harm — it potentially exposes infected PCs to hijack,” Neild reports. [MacDailyNews]