U.S. agencies probing 'all potential causes' of attack on internet provider Dyn

A man types on a computer keyboard in Warsaw in this February 28, 2013 illustration file picture. REUTERS/Kacper Pempel/Files

WASHINGTON (Reuters) - The U.S. Department of Homeland Security is looking into "all potential causes" of an attack on internet infrastructure provider Dyn that caused widespread disruptions, a spokeswoman for the agency said on Friday. The FBI is also expected to participate in the investigation into the attack, two other U.S. officials said. (Reporting by Mark Hosenball; Editing by Tim Ahmann)