SEC-01　Sensitive file read (.env)

block 15 hits here sandbox-verified

① What it stops

Agent attempted to read a .env file which may contain API keys and secrets

Remove .env from agent-readable scope or add to deny list. Use environment variable injection instead.

② Criteria

Item	Value
Severity	critical
Category	secrets
Gate	Gate 2 sensitive surface
Criterion type	tool_call
Applies to	Read、Bash

File path patterns

\.env$
\.env\.
[/\\]\.env$
^\.env$

Content patterns

\.env\b

Exclude patterns (hit ⇒ not blocked)

\.env\.example
\.env\.template
\.env\.sample

Generated directly from rules/default.json — never hand-written or paraphrased.

③ Real hits

2026-09-24T01:43:48+08:00 ✗ block [SEC-01] tool: Read　exit code: 2 criterion: path hit: .env

Triggered in a disposable sandbox project using the real hooks/pre_tool_use.py — the same method as challenge/generate_challenge.py. All 24 rules verified this way (24/24).

Daily ledger on this machine: 15 hits

2026-09-10T09:54:25+08:00 ✗ blocked [SEC-01] tool: Read　host: zcode criterion: path .env

④ False positives & exemptions

Built-in exclude patterns are listed under ②. Four exemption mechanisms exist globally (declared workspace roots, policy path whitelist, path-suspect alert-only, exclude patterns); counts on this machine are published on the Chinese page and in Limits.

⑤ Boundaries

Boundary
Criterion type	tool_call
Applies to	Read、Bash
Platform	all platforms
Case sensitivity	Measured: insensitive (`RM -RF` is blocked like `rm -rf`)
Path normalisation	Measured: effective (`./sub/../.env` is blocked)
Scripts not parsed	An absolute path outside the project mentioned in a Bash command is alerted, not blocked — `scripts are not parsed (THREAT_MODEL Non-goals)`
Failure posture	fail-open; best-effort, not a hard security boundary

⑥ Reproduce

grep -h "SEC-01" .psl/audit/*.jsonl | head python challenge/generate_challenge.py python challenge/verify.py

Cite this page

Antinel AgentState. SEC-01 Sensitive file read (.env) — rule detail. https://antinel.com/en/agentstate/rules/SEC-01/ (accessed YYYY-MM-DD)

Antinel. (2026). SEC-01 Sensitive file read (.env) — rule detail. AgentState. https://antinel.com/en/agentstate/rules/SEC-01/

BibTeX

@misc{antinel_en_agentstate_rules_SEC_01,
  title        = {SEC-01 Sensitive file read (.env) — rule detail},
  author       = {{Antinel}},
  year         = {2026},
  url          = {https://antinel.com/en/agentstate/rules/SEC-01/},
  note         = {claim tier: measured}
}

Claim tier: measured　采集时刻：2026-09-23T22:41:18+08:00