Mac owners are unlikely to be affected by the Conficker worm, claims security firm Intego. The worm -- also known as Downadup and Kido -- has already infected a number of Windows computers, and is expected to become active on Wednesday. Though the exact behavior it will exhibit is unknown, researchers are said to believe that it will connect to remote servers to download code, and then become malicious.

Macs are said to be mostly immune to the problem, as the recognized worm is not compatible with Mac OS X. Boot Camp users are being urged to update the anti-virus software on their Windows partitions however, and a minor chance exists that a Mac variant of Conficker could arise unexpectedly. No evidence of Mac code has so far been spotted, Intego notes.