LockBit ransomware encryptor used in the attack
https://www.bleepingcomputer.com/news/security/royal-mail-cyberattack-linked-to-lockbit-ransomware-operation/
A cyberattack on Royal Mail, UK's largest mail delivery service, has been linked to the LockBit ransomware operation.
Yesterday, the Royal Mail disclosed that they suffered a cyber incident that forced them to halt international shipping services.