A company that makes a controversial device that can hack into locked iPhones has just nabbed its biggest client yet: U.S. Immigration and Customs Enforcement. ICE has just signed a new $820,000 deal with Grayshift, the maker of a hacking tool known as GrayKey, according to Forbes. The Atlanta-based firm, cofounded by a former Apple security engineer, has now netted a total of $1.2 million from ICE, including a previous deal it signed with the agency last year. In a statement provided to Mashable, an ICE spokesperson confirmed that "U.S. Immigration and Customs Enforcement recently awarded a contract to Grayshift for information technology software in support of its Homeland Security Investigations component." A spokesperson for Grayshift said "we’re unable to comment on any customers that may or may not be working with the makers of GrayKey." U.S. Immigration and Customs Enforcement is now Grayshift’s biggest publicly-known client, the deal surpassing the near half-million arrangement the company had with the Secret Service.