Ransom group linked to Colonial Pipeline hack is new but experienced

FILE PHOTO: A projection of cyber code on a hooded man is pictured in this illustration picture taken on May 13, 2017. REUTERS/Kacper Pempel/Illustration

WASHINGTON (Reuters) -The ransomware group linked to the extortion attempt that has snared fuel deliveries across the U.S. East Coast may be new, but that doesn't mean its hackers are amateurs.

Who precisely is behind the disruptive intrusion into Colonial Pipeline hasn't been made officially known and digital attribution can be tricky, especially early on in an investigation. A former U.S. official and two industry sources have told Reuters that the group DarkSide is among the suspects.