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Essential EightE8-MF-ML2.9

Essential Eight MF-ML2.9 Cyber security events are analysed to identify incidents timely

What it says

Cybersecurity events are analysed in a timely manner to identify cybersecurity incidents.

Quoted as published. Everything else on this page is written by Control Stack.

What it means

In plain English

Timely analyse cyber security events to identify incidents quickly.

This control is about quickly looking at suspicious online activities to find any problems or attacks. By doing this quickly, you can stop bad things like hackers stealing data or damaging systems before they cause too much harm.

Why it matters

Delayed analysis of cyber security events can miss incidents, prolong attacker access, and increase data loss, system damage and recovery costs.

How to implement

  1. IT Team: Set up systems to automatically collect logs from all your internet-facing servers.

    Use software that can track activity like login attempts and data access.

  2. Security Officer: Regularly check these logs to spot unusual patterns, like repeated failed login attempts or accessing data at odd hours.

    Use software that highlights suspicious activity.

  3. System Administrator: Ensure that log files are protected.

    Set permissions so that only authorised personnel can view or change them to prevent tampering.

  4. IT Team: Use alerts to notify the security team immediately when potential incidents are detected.

    This could involve setting thresholds for certain activities that, when exceeded, trigger an alert.

Keep it running

Monitor logs continuously and triage alerts within defined SLAs; correlate events and escalate suspected incidents promptly for investigation.

Evidence and audit

  1. Check 1 of 3What an auditor asks for

    Ask for

    How are logs from internet-facing servers collected and managed?

    Look at

    Examine system configurations and logging setups on servers.

    Good evidence

    Logs are automatically collected, securely stored, and reviewed regularly for signs of incidents.

  2. Check 2 of 3What an auditor asks for

    Ask for

    How quickly are cyber security events analysed?

    Look at

    Review the timeline of recent incidents to see analysis times.

    Good evidence

    The organisation analyses events within hours of occurrence and has evidence of timely identification of incidents.

  3. Check 3 of 3What an auditor asks for

    Ask for

    What measures are in place to protect log integrity?

    Look at

    Check access control settings and audit trails for log files.

    Good evidence

    Log files have restricted access and any changes are logged and monitored.

Mappings

Closest match in ASD Information Security Manual: ISM-1228, Analyse cyber security events promptly, which asks for the same thing.

ISO 27001

ISO/IEC 27001: 4 mappings

ISO 42001

ISO/IEC 42001: 1 mapping

ASD ISM

ASD Information Security Manual: 10 mappings

ASD Essentials

ASD Essentials for enterprise IT: 3 mappings

Mappings show how controls relate across frameworks. They do not imply full equivalence or certification.