Colt changes tune, admits data theft as Warlock gang begins auction

A week after its services were disrupted by a cyberattack, UK telco Colt Technology Services has gone back on its initial statement to confirm that data has indeed been stolen.

The Warlock ransomware group claimed responsibility for the attack and said it swiped customer data, which is now up for auction on its dark web site.

Colt is now saying, via a freshly minted page dedicated to information about the attack, that data was stolen, but it is not yet sure of the extent of the theft, or whose data was taken.

"Through our extensive investigation, we have determined that some data has been taken," it said. "Our priority is to determine at pace the precise nature of the data that is impacted and notify any affected parties.

"Our dedicated incident response team, including external investigators and forensic experts, is working to investigate this incident. This has, and will continue ...