Date: August 2007
Affected: 1.3 million
Using credentials stolen from clients duped via email, hackers broke into the popular job recruitment serviceand made off with the resume information of almost 1.3 million job seekers, including names, addresses, phone numbers, and email addresses. The attack was eventually traced back to two servers at a Web-hosting company inUkraine and a group of personal computers loaded with a malicious software Program.

JP Mangalindan, writer @FortuneMagazine - Last updated June 08 2012: 3:14 PM ET
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