Kaspersky became aware of the situation after being informed by one of its employee about the data breach. Though SQL injection method, hacker was able to hack the support website and posted so many screenshots of the support page. Hackers listed all the table names, but didn’t post any personal information from the database.

“They could have gotten access to some data that was stored on our servers, including 2500 email addresses of customers who signed up for a product trial and 25,000 activation codes belonging to our products but that didn’t contain personal customer references. The vulnerability found on usa.kaspersky.com did not affect any other Kaspersky Lab Internet resources, including www.kaspersky.com, the official website of the company’s headquarters”. – Kaspersky

Screenshot and other hacking details here:

http://hackersblog.org/2009/02/07/usakasperskycom-hacked-full-database-acces-sql-injection/