Security experts at Black Hat this week agree that these targeted hacking attacks are unparalleled and extremely widespread. On Tuesday, McAfee released a report saying that it had uncovered evidence of a sophisticated hacking operation that had broken into systems at more than 70 companies over the past five years.
"I am convinced that every company in every conceivable industry with significant size and valuable intellectual property and trade secrets has been compromised (or will be shortly), with the great majority of the victims rarely discovering the intrusion," wrote Dmitri Alperovitch, McAfee's vice president of threat research in a blog post.
With Macs becoming increasingly popular in the corporate world, IT staffers should at least be thinking of how they'd do in an APT attack, according to Stamos. That's why his company did the research. "We have a lot of clients that have significant Mac penetration," he said. "We've seen Macs escape from the prison in the marketing department."