title: Account Tampering - Suspicious Failed Logon Reasons description: This method uses uncommon error codes on failed logons to determine suspicious activity and tampering with accounts that have been disabled or somehow restricted. author: Florian Roth logsource: product: windows service: security detection: selection: EventID: - 4625 - 4776 Status: - 0xC0000072 - 0xC000006F - 0xC0000070 - 0xC0000413 - 0xC000018C condition: selection falsepositives: - User using a disabled account level: high