1. October 2006 - Hackers look to crack Mac [1]

"Apple computers have long been prized for being virus-free. But as more people use Apple products, experts say the company is increasingly becoming a target for cyber pranksters ..."

2. April 2009 - Experts: Malicious program targets Macs [2]

"Mac computers are known for their near-immunity to malicious computer programs that plague PCs. But that may be changing somewhat, according to computer security researchers (...)"

3. May 2011 - Is Mac under a virus attack? [3]

"Is Mac under a virus attack? No. But there’s some bad news rising on the Apple malware front (...)"

4. September 2012 - Malware attacks on the rise [4]

"Apple (AAPL) got a wake-up call in the second quarter. The company had advertised that Macs didn't get viruses, but a virus called "Flashback" changed all that (...)"

You will notice something in common in all those reports:

1. "Oliver Friedrichs, director of security response at * Symantec, a leading anti-virus software vendor , said 72 vulnerabilities were discovered in the Mac's OS X operating system in 2006, up from 19 in 2004."

2. "But blogs are buzzing this week about what two Symantec researchers * have called the first harmful computer program to strike specifically at Mac."

3. "According to a memo released Monday by the * computer security site Intego * (...) (maker of Mac Internet Security, Antivirus for Mac)

4. "Attacks that we've traditionally seen on PCs are now making their way to other devices," said Vincent Weafer, * head of McAfee Labs * . "This report highlights the need for protection on all devices that may be used to access the Internet. (...)"

[1] http://edition.cnn.com/2006/TECH/ptech/10/20/apple.virus/ind...

[2] http://edition.cnn.com/2009/TECH/04/22/first.mac.botnet/inde...

[3] http://fortune.com/2011/05/04/is-mac-under-a-virus-attack/

[4] http://money.cnn.com/2012/09/04/technology/malware-cyber-att...

And, of course, on the linked article:

"So much for the argument 'Apple computers are safer and bug-free.' It's not true. We're accustomed to annoying glitches in PCs. But the past few years have shown that Macs, iPads and iPhones have them too. "

and

"They don't appear to have a regular patch schedule like Microsoft, nor do they appear to patch continuously like Google does with Chrome," said Tod Beardsley, a research manager at cybersecurity firm Rapid7.. "

of course with the link neatly placed on Rapid7.