// MITRE ATT&CK
T1556.004 · Network Device Authentication
Sub-technique of T1556 · Modify Authentication Process.
Adversaries may use [Patch System Image](https://attack.mitre.org/techniques/T1601/001) to hard code a password in the operating system, thus bypassing of native authentication mechanisms for local accounts on network devices. [Modify System Image](https://attack.mitre.org/techniques/T1601) may inc...
How to detect & mitigate it
Detecting Network Device Authentication starts with your SIEM/EDR telemetry. Write a detection rule with the Sigma generator, analyze suspicious logs in the log analyzer, and place the technique on your coverage with the ATT&CK matrix.
Related techniques
T1687
Exploitation for Defense Impairment T1556.003
Pluggable Authentication Modules T1578.004
Revert Cloud Instance T1222.002
Linux and Mac Permissions T1666
Modify Cloud Resource Hierarchy T1685.003
Modify or Spoof Tool UI T1685.001
Disable or Modify Windows Event Log T1578
Modify Cloud Compute Infrastructure
Exploitation for Defense Impairment T1556.003
Pluggable Authentication Modules T1578.004
Revert Cloud Instance T1222.002
Linux and Mac Permissions T1666
Modify Cloud Resource Hierarchy T1685.003
Modify or Spoof Tool UI T1685.001
Disable or Modify Windows Event Log T1578
Modify Cloud Compute Infrastructure
Source: MITRE ATT&CK®. ATT&CK is a registered trademark of The MITRE Corporation. Content for educational purposes.