audit

confide:audit — corpus-scale, stats-only PII audit

Measure how much PII lives across a whole folder of sessions, without ever exposing any of it. The audit runs the layered LOCAL detector stack from shared/confide_core.py (regex → Natasha → local LLM) over each file and emits only aggregates. This mirrors the real_session_eval privacy contract: read text only in-process, emit counts.

Privacy invariants (do not violate)

• Local-only. No cloud APIs. Raw transcript text never leaves the machine.
• Stats-only output. The report (markdown + json + optional HTML) contains ONLY counts and rates — never a transcript substring, never a detected PII value.
• No filenames. Per-file rows are keyed by anonymized ids own-00, own-01, … The original path/name is never written or printed. On an unreadable file, only the index + exception class name is recorded.
• Safe to surface. Because it is counts-only, the aggregate report can be shared with a cloud agent or pasted into a chat. The PII stays on the machine.

What it reports

• n_files, total / mean / min / max document chars
• spans_by_type (PERSON, EMAIL, PHONE, DATE, …) and spans_by_layer (regex / natasha / llm)
• overall_redaction_rate plus the per-session redaction-rate distribution (min / median / mean / max)
• a coarse residual proxy: spans still detectable after redaction — ~0 on a clean RED corpus, a leakage signal on a GREEN corpus.

Run it

Point it at a folder (recurses, processes every .md/.txt; skips confide's own *.green.md / *.stats.json outputs):

python3 skills/audit/scripts/audit.py FOLDER

Options:

• --list paths.txt — also/instead audit absolute paths listed one per line.
• --layers regex,natasha,llm — choose detection layers (default from config). Use --layers regex for a fully offline, deterministic pass (no models/network).
• --out report.md — report path; a report.json sibling is written alongside.
• --html — also write a Tufte-ish dashboard (report.html, counts only).

Writes the markdown + json report (and optional HTML) and prints the aggregate summary — all counts only.

RED vs GREEN

• RED (raw) corpus: sizes the PII problem before any redaction.
• GREEN (redacted) corpus: the residual proxy and remaining spans_by_type tell you whether redaction is holding at scale.

After running

1. Report the aggregate summary (file count, span totals by type/layer, redaction-rate distribution, residual proxy) — never paste PII.
2. If residual is non-trivial on a GREEN corpus, point the user at confide:anon to re-redact and confide:red to probe re-identification risk.

Setup

Layer availability (Natasha, local LLM via Ollama) comes from config — run confide:setup if they aren't installed. --layers regex always works offline.