By Staff Writer on May 21, 2021 1:00PM NCSC works to ensure tool is not a trick. Ireland said on Thursday that experts were examining a decryption tool that had been posted online that might help unlock IT systems disabled by a massive ransomware attack on its health service operator. The government said it had not paid and would not pay any ransom in exchange for the purported key. It did not comment on reports that the gang had threatened to make reams of patient data public next week. Ireland's Health Service Executive (HSE) shut down its networks last Friday after the attack that it blamed on an international cybercrime gang.