At PC World, Jaikumar Vijayan lists the top five data disasters of the past year.

"If there was anything even vaguely comforting about the data breaches that were announced this year, it was that many of them stemmed from familiar and downright mundane security failures," Vijayan writes.

"Companies continued to be felled more by usual issues such as lost laptops, unpatched or poorly coded software, inadvertent disclosures and rogue insiders, rather than by sneaky new attack techniques or devastating new hacker tools," Vijayan adds.

Click here to read the PC World story.