Email Still the Biggest Threat for Insider Leaks, but Blogs, Video on the Rise

A report from security firm Proofpoint shows that email isn’t the only inside threat companies face–confidential information is leaking out via blogs, mobile devices and social-media sites.

In a survey of some 220 companies, Proofpoint found that email is still the No. 1 offender when it comes to data leaks. About 43% of respondents had investigated an email-based security breach during the past year. Nearly one-third of the companies surveyed had fired an employee for violating email confidentiality policies, a 26 percent increase from 2008.

Blogs and videos are increasingly channels for leaks as well, with 18 percent of respondents saying that they looked at those media when investigating an information leak.

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