CBS has confirmed that their twitter accounts were hijacked by Syrian hackers. This includes the accounts of 60 minute,48 hours and a Denver affiliate network.The accounts were hijacked by the Syrian Electronic Army.
They tweeted the tweets like
new evidence of CIA arming Al Qaeda terrorists in #Syria
The accounts of the CBS 60 minutes and 48 hours has been suspended after the hijack.The Syrian Electronic Army had always targeted the news media accounts including Al-Jazeera on 18th July and leaked the database along with the system administrator account details on PasteBin.
Source The Verge