The Shadow Brokers (TSB), the hacker group that shared tools allegedly stolen from the U.S. National Security Agency, is threatening to make an encore appearance. Indeed, the group says it will publish more hacker tools in July -- though the price to get your hands on them will be about $22,000, Reuters said. The rather ominous twist: The service will be a subscription offering that features new data dumps on a monthly basis, the group alleged.As their name suggests, The Shadow Brokers is clouded in mystery. The group first surfaced in mid-2016, and from time to time has leaked hacker tools apparently from the NSA. Among the most damaging moves: The group released some NSA hacking tools in April 2017, and those tools ultimately triggered the massive WannaCry ransomware outbreak in early May 2017.Shortly after WannaCry emerged, The Shadow Brokers promised to release hacking tools every month. It also threatened to dump data from banks that leverage the SWIFT international money transfer network, Reuters reported at the time. SWIFT, which handles trillions of dollars in fund transfers daily, has been hacked multiple times, Reuters has noted.