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monitoring-scada-modbus-traffic-anomalies

100 / 100 · Low risk

Fine to try.

By plurigrid/asi (GitHub) · security · 72 stars · scanned at commit 293ce9f

Monitors Modbus TCP traffic on SCADA and ICS networks to detect anomalous function code usage, unauthorized register writes, and suspicious communication patterns. The analyst uses deep packet inspection with pymodbus, Scapy, and Zeek to baseline normal PLC/RTU communication behavior, then applies statistical and rule-based anomaly detection to identify reconnaissance, parameter manipulation, and denial-of-service attacks targeting Modbus devices on port 502. Activates for requests involving Mo…

Works with any agent that supports SKILL.md skills.

What this skill can do

We found nothing in the files we read that matches our rules. That does not prove the skill is safe: see the limits of static scanning.

Install

Paste this into your terminal. It downloads exactly the version we scanned, not whatever is newest.

if [ -e ~/.agents/skills/'monitoring-scada-modbus-traffic-anomalies' ] || [ -L ~/.agents/skills/'monitoring-scada-modbus-traffic-anomalies' ]; then echo 'A skill folder named monitoring-scada-modbus-traffic-anomalies already exists — not replacing it' >&2; false; else d=$(mktemp -d) && git clone --quiet --filter=blob:none --no-checkout 'https://github.com/plurigrid/asi' "$d" && git -C "$d" checkout --quiet '293ce9f76e3abcd5ba18db284688bc0d9ac6691d' -- 'plugins/asi/skills/monitoring-scada-modbus-traffic-anomalies' && mkdir -p ~/.agents/skills && cp -R "$d"/'plugins/asi/skills/monitoring-scada-modbus-traffic-anomalies' ~/.agents/skills/'monitoring-scada-modbus-traffic-anomalies' && rm -rf "$d"; fi

Codex reads ~/.agents/skills directly. For Claude Code, Cursor, Copilot, Gemini CLI, Antigravity or OpenCode, also link it. For Claude Code: ln -s ~/.agents/skills/'monitoring-scada-modbus-traffic-anomalies' ~/.claude/skills/'monitoring-scada-modbus-traffic-anomalies' (other agents: ~/.cursor/skills, ~/.copilot/skills, ~/.gemini/skills, ~/.gemini/config/skills, ~/.config/opencode/skills). Or install through the finder skill, which does both.

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