Australian Information Security Manual

Guidelines for system hardening

Australian Information Security Manual ISM-0422: Passwords used for single-factor authentication on TOP SECRET systems are a minimum of 20

Passwords used for single-factor authentication on TOP SECRET systems are a minimum of 20 characters.

Maintained by Gerard BlokdykVerified against the published standard 31 May 2026Control text last updated 21 May 2026

Other controls in Guidelines for system hardening

ISM-0341 Automatic execution features for removable media are disabled.
ISM-0343 If there is no business requirement for writing to removable media and devices, such funct
ISM-0345 External communication interfaces that allow DMA are disabled.
ISM-0380 Unneeded user accounts, components, services and functionality of operating systems are di
ISM-0382 Unprivileged users do not have the ability to uninstall or disable approved applications.
ISM-0383 Default user accounts or credentials for operating systems, including for any pre-configur
ISM-0408 Systems have a logon banner that reminds users of their security responsibilities when acc
ISM-0417 When systems cannot support multi-factor authentication, single-factor authentication usin

Query this from an agent

The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.

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