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Security Standards and Baseline Requirements

Frameworks and policies · 2 min read

From intent to specifics

A policy says “access must be strongly authenticated”. A standard says how: “MFA for all remote and privileged access; passwords at least 14 characters; lockout after 10 failed attempts”. Standards make policy specific, measurable and auditable. They’re mandatory and must support, not contradict, the policy above them.

AreaExample requirement
AuthenticationMFA for remote and privileged access
EncryptionAES-256 at rest; TLS 1.2 or higher in transit
LoggingSecurity events kept for 12 months and sent to the SIEM
PatchingCritical patches on internet-facing systems within 7 days
Secure developmentCode review and static analysis before release

Standards change more often than policies, as technology and threats evolve.

Security baselines

Start from a benchmark, tailor, approve, build from it, monitor drift.

A security baseline is the minimum secure configuration for a type of system: an operating system, a database, a cloud service, a network device. Baselines:

  1. Start from a benchmark, such as the CIS Benchmarks, vendor security guides or NIST guidance.
  2. Are tailored to the organisation’s risk and systems.
  3. Are approved and versioned.
  4. Are built in, through golden images and infrastructure-as-code templates.
  5. Are monitored: automated scanning detects configuration drift.

Using baselines well

  • A baseline is a minimum, not a target. High-risk systems may need more.
  • Build it in so systems start compliant.
  • Monitor for drift; without automation, drift goes unnoticed.
  • Deviations need a change record or an approved exception.

Example. Cloud scanning shows 30% of new virtual machines deviate from the baseline, because teams build them by hand. Moving to approved infrastructure-as-code templates brings deviation below 2% and makes every exception visible.

How the exam asks about it

If the question asks…The answer is usually…
Document that sets the minimum password lengthA standard
Minimum secure configuration for a type of systemA security baseline
Good starting point for baselinesRecognised benchmarks such as the CIS Benchmarks
How to detect configuration driftAutomated compliance scanning against the baseline
A system can’t meet the baselineAn approved exception with compensating controls

In short

  • Standards make policies specific and measurable: password length, encryption algorithms, logging requirements.
  • Standards are mandatory; they're approved by the security function or management under the authority of the policy.
  • A security baseline is the minimum secure configuration for a type of system (OS, database, cloud service, network device).
  • Baselines usually start from recognised benchmarks such as CIS Benchmarks, then are tailored to the organisation's risk.
  • Systems are built from baselines (golden images, infrastructure as code) and monitored for configuration drift.
  • Standards and baselines change more often than policies, as technology and threats evolve.

Exam traps

  • Standards belong under policy; they must not contradict it.
  • A baseline is a minimum, not a target; higher-risk systems may need more.
  • Configuration drift goes unnoticed without automated monitoring.
  • Deviations from a baseline need a change record or an approved exception.

Slides

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CISM · Domain 3 · Frameworks and policies

Security Standards and Baseline Requirements

How standards turn policy into specific, measurable requirements, and how security baselines define the minimum secure configuration for each type of system.

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