Spam Filters Grabbed Many LinkedIn Break-In Warnings

Many of the LinkedIn e-mails alerts instructing users on how to reset passwords accessed by hackers were dumped into spam boxes, according to e-mail security vendor Cloudmark.

In a blog post last week, Andrew Conway, a Cloudmark researcher, said a substantial increase in spam reports last weekend were traced to LinkedIn password reset e-mail alerts 

In many cases, the e-mail messages that users' marked as spam were legitimate alerts from LinkedIn, Conway said. "Over 4 percent of the people receiving this e-mail thought it was spam and sent it straight to the bit bucket," Conway said. "If Linkedin sends out 6.5 million e-mails, then a quarter of a million people are congratulating themselves on avoiding spam -- and still have a compromised Linkedin password.