How do I install the Analyzing Web Server Logs For Intrusion skill?

Run npx skillmds add thedixitjain/analyzing-web-server-logs-for-intrusion in your terminal (requires Node.js), paste this page's agent-chat prompt into Claude, Cursor, or any MCP-connected agent, or download the SKILL.md file and copy it into your agent's skills directory.

Is Analyzing Web Server Logs For Intrusion safe to use?

This skill has not completed SkillMD's automated safety review yet. Capability flags: executes scripts, makes network calls, reads secrets. SkillMD never runs a skill's scripts for you; review the SKILL.md before installing.

Which AI agents work with Analyzing Web Server Logs For Intrusion?

This skill is tagged as working with Claude Code, Claude.ai, OpenAI Codex. SKILL.md is an open format, so most agents that read a skills directory can load it too.

Is Analyzing Web Server Logs For Intrusion free to use?

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Who published Analyzing Web Server Logs For Intrusion?

thedixitjain (@thedixitjain) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Analyzing Web Server Logs For Intrusion by thedixitjain

Name: Analyzing Web Server Logs For Intrusion
Rating: 4.2 (5 reviews)
Author: thedixitjain

Analyzing Web Server Logs For Intrusion

Parse Apache and Nginx access logs to detect SQL injection attempts, local file inclusion, directory traversal, web scanner fingerprints, and brute-force patterns. Uses regex-based pattern matching against OWASP attack signatures, GeoIP enrichment for source attribution, and statistical anomaly detection for request frequency and response size outliers.

thedixitjain 18dfb66 4 files · 23.1 KB Updated Sep 9, 2026 2 repo stars

File contents

Analyzing Web Server Logs for Intrusion

When to Use

When investigating security incidents that require analyzing web server logs for intrusion
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

Prerequisites

Familiarity with security operations concepts and tools
Access to a test or lab environment for safe execution
Python 3.8+ with required dependencies installed
Appropriate authorization for any testing activities

Instructions

Install dependencies: pip install geoip2 user-agents
Collect web server access logs in Combined Log Format (Apache) or Nginx default format.
Parse each log entry extracting: IP, timestamp, method, URI, status code, response size, user-agent, referer.
Apply detection rules:
- SQL injection: UNION SELECT, OR 1=1, ' OR ', hex encoding patterns
- LFI/Path traversal: ../, /etc/passwd, /proc/self, php://filter
- XSS: <script>, javascript:, onerror=, onload=
- Scanner signatures: nikto, sqlmap, dirbuster, gobuster, wfuzz user-agents
- Brute force: >50 POST requests to login endpoints from same IP in 5 minutes
Enrich with GeoIP data and generate a prioritized findings report.

python scripts/agent.py --log-file /var/log/nginx/access.log --geoip-db GeoLite2-City.mmdb --output web_intrusion_report.json

Examples

Detect SQLi in URI

192.168.1.100 - - [15/Jan/2024:10:30:45 +0000] "GET /products?id=1' UNION SELECT username,password FROM users-- HTTP/1.1" 200 4532

Scanner User-Agent Detection

Nikto/2.1.6, sqlmap/1.7, DirBuster-1.0-RC1, gobuster/3.1.0

Source: mukul975/Anthropic-Cybersecurity-Skills → skills/analyzing-web-server-logs-for-intrusion/SKILL.md

---name: analyzing-web-server-logs-for-intrusiondescription: Parse Apache and Nginx access logs to detect SQL injection attempts, local file inclusion, directory traversal, web scanner fingerprints, and brute-force patterns. Uses regex-based pattern matching against OWASP attack signatures, GeoIP enrichment for source attribution, and statistical anomaly detection for request frequency and response size outliers.--- # Analyzing Web Server Logs for Intrusion ## When to Use - When investigating security incidents that require analyzing web server logs for intrusion - 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 ## Prerequisites - Familiarity with security operations concepts and tools - Access to a test or lab environment for safe execution - Python 3.8+ with required dependencies installed - Appropriate authorization for any testing activities ## Instructions 1. Install dependencies: `pip install geoip2 user-agents` 2. Collect web server access logs in Combined Log Format (Apache) or Nginx default format. 3. Parse each log entry extracting: IP, timestamp, method, URI, status code, response size, user-agent, referer. 4. Apply detection rules: - SQL injection: `UNION SELECT`, `OR 1=1`, `' OR '`, hex encoding patterns - LFI/Path traversal: `../`, `/etc/passwd`, `/proc/self`, `php://filter` - XSS: `<script>`, `javascript:`, `onerror=`, `onload=` - Scanner signatures: nikto, sqlmap, dirbuster, gobuster, wfuzz user-agents - Brute force: >50 POST requests to login endpoints from same IP in 5 minutes 5. Enrich with GeoIP data and generate a prioritized findings report. ```bash python scripts/agent.py --log-file /var/log/nginx/access.log --geoip-db GeoLite2-City.mmdb --output web_intrusion_report.json ``` ## Examples ### Detect SQLi in URI ``` 192.168.1.100 - - [15/Jan/2024:10:30:45 +0000] "GET /products?id=1' UNION SELECT username,password FROM users-- HTTP/1.1" 200 4532 ``` ### Scanner User-Agent Detection ``` Nikto/2.1.6, sqlmap/1.7, DirBuster-1.0-RC1, gobuster/3.1.0 ``` --- **Source:** [`mukul975/Anthropic-Cybersecurity-Skills`](https://github.com/mukul975/Anthropic-Cybersecurity-Skills) → `skills/analyzing-web-server-logs-for-intrusion/SKILL.md`

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