Individual skill
detecting-api-enumeration-attacks
Detect API enumeration attacks (BOLA/IDOR, OWASP API1:2023) by writing SIEM detection rules that flag sequential or UUID identifier iteration, parameter tampering, and mixed 200/401/403 response patterns from API gateway and WAF logs. Use when investigating suspected object-level authorization abuse, building threat-hunting queries for API access-control bypass, or hardening API logging/rate-limiting against enumeration.
skills/detecting-api-enumeration-attacks/SKILL.md
Source commit 54a798831d2266a3ca61ce68a7acb80b81160d57
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- Yes
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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Repository context
- Repository stars (not skill ratings)
- 35,882
- Repository last updated
- Aug 31, 2026
- License
- Apache-2.0
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- ai-agents Repository topic
- claude-code Repository topic
- cybersecurity Repository topic
- incident-response Repository topic
- mitre-attack Repository topic
- penetration-testing Repository topic
- red-team Repository topic
- security Repository topic
- cloud-security Repository topic
- malware-analysis Repository topic
- api-security Declared skill tag
- enumeration Declared skill tag
- bola Declared skill tag
- idor Declared skill tag
- broken-object-level-authorization Declared skill tag
- owasp-api-top-10 Declared skill tag
- access-control Declared skill tag
- rate-limiting Declared skill tag
- security Derived category
- writing Derived category
- security-application Derived category
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LICENSEasset · 11,255 bytesSKILL.mdcore · 14,613 bytesSKILL.mdcore · 14,613 bytesSKILL.mdcore · 14,613 bytesSKILL.mdcore · 14,613 bytesSKILL.mdcore · 14,613 bytesreferences/api-reference.mddoc · 1,931 bytesscripts/agent.pyruns · 6,726 bytes
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# Detecting API Enumeration Attacks
## Overview
API enumeration attacks occur when attackers systematically probe API endpoints with sequential or predictable identifiers to discover and access unauthorized resources. Broken Object Level Authorization (BOLA), ranked as API1:2023 in the OWASP API Security Top 10, is the most critical API vulnerability. Attackers manipulate object identifiers (user IDs, order numbers, account references) in API requests to bypass authorization and access other users' data. Detection requires monitoring for patterns of rapid sequential access attempts, authorization failures, and abnormal API usage behavior.
## When to Use
- When investigating security incidents that require detecting api enumeration attacks
- When building detection rules or threat hunting queries for this domain
- When SOC analysts need structured procedures for this analysis type
- When validating security monitoring coverage for related attack techniques
