Islamic militants are making sophisticated use of mobiles phones to spread propaganda, a study suggests.

Samsung accuses Apple of violating its patent rights, days after Apple accused it of "slavishly" copying designs of its iPad and iPhone.

Experts warn that a jury's decision to fine Google $5m (£3.2m) over alleged Linux patent infringements could trigger a flood of lawsuits across the high-tech industry.

Millions of gamers have been left unable to play online as the Playstation Network remains unavailable after more than 20 hours.