News bites: NSA teams up with ISPs to block cyberattacks

The National Security Agency (NSA) is working with Internet service providers to block attacks against defense networks.

Facebook is preparing to unveil its first iPad app.

Software used to run weapons systems in China could be vulnerable to hackers, according to the Department of Homeland Security.

The Pentagon is gearing up for cyberwar.

And comedian Dave Chappelle is reportedly planning to return to TV — via an online subscription service like Hulu or Netflix.