One of the main reasons Windows users switch to the Macintosh is to escape the constant onslaught of malware. Viruses, Trojans and spyware are a constant threat to the Windows ecosystem. Apple touts the Mac as being a haven from malware, and certainly in the past that’s been the case. But the past is no guarantee of what will happen in the future. The Mac’s market share is growing rapidly — from 2 percent just a few years ago to around 10 percent now — and the bad guys are starting to notice. Although relatively few now, there are an increasing number of threats taking aim at Mac users.