US firm Husch Blackwell is emphasising that it was not directly subject to a data breach, after a hacker claimed on New Year's Eve that it was in possession of legal documents created by its predecessor firm pertaining to the 9/11 attacks.

As first reported by the Financial Times, a hacker or group of hackers calling itself The Dark Overlord announced that it had hacked insurers Hiscox and Lloyd's of London, along with World Trade Center owner Silverstein Properties. In doing so, The Dark Overlord said it had obtained a trove of documents from US outfit Blackwell Sanders Peper Martin, which is now Husch Blackwell.