US Bank is investigating claims by ransomware group LockBit that it breached the bank and stole data, with a threat to leak the information on September 3 unless an undisclosed ransom is paid. The bank states there is currently no indication its internal systems were compromised or that unauthorized access occurred. LockBit, which re-emerged in 2025 with a new ransomware variant after a law enforcement takedown in 2024, has a history of retaining victim data even after ransoms are paid.