Dark Overlord's demands targeted several insurers and legal firms, including Lloyds of London, Silverstein Properties and Hiscox Syndicates. It is unclear what exact files were stolen by the group, however the hacking collective tweeted "We'll be providing many answers about 9.11 conspiracies through our 18.000 secret documents leak from @HiscoxComms and others."
"Hiscox Syndicates Ltd and Lloyds of London are some of the biggest insurers on the planet insuring everything from the smallest policies to some of the largest policies on the planet, and who even insured structures such as the World Trade Centers," the group's announcement reads.
According to a spokesperson for the Hiscox Group, the hackers had breached a law firm which advised the company and had likely stolen files linked to litigation tied to the 9/11 attacks.
"The law firm's systems are not connected to Hiscox's IT infrastructure and Hiscox's own systems were unaffected by this incident. One of the cases the law firm handled for Hiscox and other insurers related to litigation arising from the events of 9/11, and we believe that information relating to this was stolen during that breach," the spokesperson told Motherboard in an email.