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Plan for Incident Response

Implementation Effort: Medium
Planning an incident response strategy requires coordination between security operations, API owners, and platform teams to define workflows, integrate tools, and assign responsibilities.

User Impact: Low
All actions are handled by security and platform administrators; no direct user involvement is required.

Overview​

Microsoft Defender for APIs integrates with Microsoft Defender for Cloud and Microsoft Defender XDR to support a comprehensive incident response strategy. This includes detection, triage, containment, and recovery from API-related threats. A well-planned incident response workflow ensures that security teams can act quickly and effectively when threats are detected.

Key Components of an Incident Response Plan​

  • Detection & Alerting: Defender for APIs generates alerts for threats such as unauthenticated access, sensitive data exposure, and OWASP API Top 10 risks 1.
  • Triage & Prioritization: Use the Microsoft Defender portal to filter and sort incidents by severity, scope, and affected assets 2.
  • Investigation: Analyze the attack story, alert details, and impacted entities (e.g., APIs, users, backend services) using the incident graph and evidence tabs 2.
  • Containment & Eradication: Take actions such as disabling compromised API keys, isolating affected services, or blocking malicious IPs 2.
  • Recovery: Restore affected resources and validate that the threat has been neutralized.
  • Post-Incident Review: Document findings, update playbooks, and adjust security configurations to prevent recurrence 2.

Integration Options​

  • Microsoft Sentinel: Automate triage and response using playbooks and automation rules.
  • Defender XDR API: Programmatically access incident data for custom workflows 3.

Without a defined incident response plan, API threats may go unresolved or escalate, increasing the risk of data breaches or service disruption. This capability supports the Zero Trust principle of "Assume breach" by ensuring rapid detection, containment, and recovery from API-related incidents.

Reference​