Reportedly, Twitter was hacked early Friday morning by a group calling itself the "Iranian Cyber Army."

Users arriving at the site hoping to read their latest tweets were instead greeted by a black screen with a green flag. Check out the screenshot of Twitter.com showing the site defaced by this "Iranian Cyber Army."

Twitter Hacked - Iranian Cyber Army
The motives of this self-called Iranian Cyber Army in hacking Twitter is not yet disclosed, but one thing might be certain - they don't want the US messing with them.