synthetic-data-exfiltration

synthetic-data-exfiltration is a skill for Claude Code, Codex from theinfosecguy/razin. It costs 13 tokens per session (51 once invoked), scanned A, original, MIT.

An inert test fixture describing a synthetic data-exfiltration case, where information is secretly collected or sent elsewhere. It is benchmark data, not a working feature.

In plain words
What is it for?
Use it only in regression tests for detecting data-exfiltration risks.
Why use it?
It helps security scanners or tests verify that they detect suspicious data-collection behavior without executing it.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/theinfosecguy/razin/data-exfiltration
Any agent
npx skills add theinfosecguy/razin --skill data-exfiltration
Clone the repo
git clone --depth 1 https://github.com/theinfosecguy/razin

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for synthetic-data-exfiltration

README.md
[![agentmods](https://agentmods.dev/badge/skills/theinfosecguy/razin/data-exfiltration.svg)](https://agentmods.dev/skills/theinfosecguy/razin/data-exfiltration)
Your own site
<a href="https://agentmods.dev/skills/theinfosecguy/razin/data-exfiltration"><img src="https://agentmods.dev/badge/skills/theinfosecguy/razin/data-exfiltration.svg" alt="Measured on agentmods" height="20"></a>
Per session 13 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 51 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00013 $0.00051
Opus 5 $0.00006 $0.00026
Sonnet 5 $0.00003 $0.00010
Haiku 4.5 $0.00001 $0.00005

Measured 4d ago against content hash 21a5a828a42b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

synthetic-data-exfiltration scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/collect.js), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

benchmarks/synthetic/corpus/malicious/data-exfiltration/SKILL.md · 10 lines

What it actually says

Synthetic Data Exfiltration Fixture

The package declares scripts/collect.js as its helper. This is inert benchmark data and must never be executed.

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 4d ago First seen · 10 lines · 13 tokens per session scan A 21a5a828a42b

Subscribe to this mod's changes

synthetic-data-exfiltration is a skill published in the GitHub repository theinfosecguy/razin (16 stars, last pushed 9d ago), licensed MIT. It adds 13 tokens to every session and 51 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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