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  1. Frameworks
  2. >ISM
  3. >System Hardening
  4. >Authentication Hardening
  5. >Password Strength
  6. >ISM-1558
ISM-1558Active

Control: ism-1558

Control Statement

Passwords using a sequence of words for single-factor authentication are not constructed using:

  • a list of categorised words
  • a real sentence in a natural language
  • song lyrics, movie or television show quotes, literature, or any other publicly available material
  • less than 4 random words for non-classified, OFFICIAL: Sensitive and PROTECTED systems; 5 random words for SECRET systems; or 6 random words for TOP SECRET systems.

Location

Guideline
Guidelines for system hardening
Section
Authentication hardening
Topic
Password strength

Control Details

Identifier
ISM-1558
Revision
3
Updated
Dec-25
Type
Control

Classification Applicability

NCOSPSTS

Essential Eight

N/A
AESCSF
AESCSF-ACCESS-1drelatedvia aescsf-reference
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Password strength11 controls
ISM-1559Control: ism-1559ISM-1560Control: ism-1560ISM-1561Control: ism-1561ISM-0421Control: ism-0421ISM-1557Control: ism-1557ISM-0422Control: ism-0422ISM-1558Control: ism-1558ISM-2078Control: ism-2078ISM-2079Control: ism-2079ISM-2080Control: ism-2080ISM-2081Control: ism-2081