It has been a long-held belief that Apple Mac computers are far superior to PCs when it comes to repelling viruses and up until now it has been true. But that could be about to change with the appearance of Leap A, one of the first pieces of malicious software aimed at Macs.

It has been a long-held belief that Apple Mac computers are far superior to PCs when it comes to repelling viruses and up until now it has been true. But that could be about to change with the appearance of Leap A, one of the first pieces of malicious software aimed at Macs.

Although viewed as relatively unsophisticated compared to other viruses, industry experts believe Leap A is a useful reminder that Macs are not entirely invulnerable to viruses, worms, Trojans and other so-called malware.