Lenovo Website Hacked Less Than a Week After Adware Blunder

Lenovo Group Ltd.’s website was hijacked and users were redirected, less than a week after the company was criticized for pre-installing advertising software on consumer laptops that exposed users to hacking.

The company said it had restored some functionality to the site after customers reported a breach in which they saw videos of young people looking into Web cameras, with the song “Breaking Free” from the movie “High School Musical” playing in the background. Some employee e-mails were also leaked by a hacking group called the Lizard Squad, according to postings on Twitter. The group has previously targeted Sony Corp.’s online PlayStation video-game network.