Hacking collective LulzSec has decided to stop giving online gaming sites a hard time and instead put its efforts into taking down the CIA's website and the FBI's phone network.

Yesterday the group managed to DDoS the CIA's homepage and along with it the FBI's phone network in Detroit.

As per usual LulzSec kept everyone updated with its hacking shenanigans on Twitter, posting on the site: "Tango down – CIA.Gov- for the lulz.".

According to reports, it wasn't just the CIA and the FBI, either - the US Senate's website was also a target, but the group failed to compromise the site.

Love hack

LulzSec has been extremely busy over the last few weeks, but it has mostly targeted gaming sites. Its Titanic Takeover Tuesday campaign saw the group hack into Eve Online, Minecraft, League of Legends and FinFisher.

Even though LulzSec seems to be infiltrating websites just to show how poor the security is, this latest wave of hacks will have the US government keeping more than a close eye on it.

The Ministry of Defence has published a set of YouTube videos warning of the dangers of loose social networking lips.

Aimed at military personnel and their friends and family, the videos warn that anyone could be tracking their status updates, including "the enemy".

Harking back to wartime propaganda warning Brits that 'careless talk costs lives', the 21st century version warns that careless tweets, status updates and FourSquare check-ins could prove equally dangerous.

Loose lips sink ships

New recruits will also be taught how to use social media safely so they don't give away their location or restricted information without realising.

"It can be simple to collate information from various sources in order to build up a picture of who a person is. Similarly it might only take one careless comment, or posting a picture without checking what's in the background to put friends and colleagues at risk," reads the MOD site.

While 'Think before you share' is not quite as catchy as the '40s slogans the MoD hopes the YouTube message will curb social networking leaks, which have been known to happen.