MA
Muhammad AldiansyahBlue Team Defense Hub
Evidence-led defense

Phishing Response

Analyze reported messages, protect identities, remove malicious content, and find related exposure.

On this page · 4 sections
01

Operating context

Phishing response joins message evidence, sender authentication, URLs or attachments, identity telemetry, mailbox actions, and recipient scope.

  • Define the security decision that phishing response must support.
  • Assign accountable owners, escalation paths, service levels, and privacy boundaries.
  • Measure signal quality, response consistency, operational cost, and improvement over time.
02

Operational workflow

  1. 01

    Establish scope, dependencies, normal behavior, and a documented baseline.

  2. 02

    Collect the minimum telemetry and context needed for phishing response.

  3. 03

    Correlate independent signals and state confidence before taking disruptive action.

  4. 04

    Document the decision, evidence, containment or control action, and responsible owner.

  5. 05

    Review the outcome, tune the process, and validate the improvement with a safe test.

03

Signals, evidence & decisions

Signal or artifactDecision it supports
original message and authentication resultsEstablish event sequence and affected scope.
URL or attachment analysis recordConfirm identity, asset, or control context.
identity and mailbox activitySupport containment, recovery, or tuning.

Record source, timestamp, collection method, confidence, owner, and disposition. Preserve the smallest useful evidence set and document any uncertainty.

04

Implementation & improvement

  • Use safe analysis environments and preserve originals.
  • Search for related deliveries before deletion.
  • Revoke sessions when identity compromise is plausible.

Official references

NIST SP 800-61 Rev. 3CISA Incident Response Playbooks