# M2 Pre-Cum — August 7, 2026

## The Hook Leak

During the M5 security audit session, a Claude Code hook from the M2 fired on the M5
TWICE. The error appeared both times after writing a file:

```
PostToolUse:Write hook blocking error from command:
"python3 /Users/ares/Documents/GitHub/Ares/scripts/tasks/hook_validate.py":
[python3 /Users/ares/Documents/GitHub/Ares/scripts/tasks/hook_validate.py]:
/Library/Developer/CommandLineTools/usr/bin/python3: can't open file
'/Users/ares/Documents/GitHub/Ares/scripts/tasks/hook_validate.py':
[Errno 2] No such file or directory
```

## What This Means

**The M2's Claude Code hook configuration is executing on M5.**

The path `/Users/ares/Documents/GitHub/Ares/` is the M2's home directory. M5's home
is `/Users/nftlasvegas/Documents/GitHub/Ares/`. These are completely different machines
with different usernames. The script `scripts/tasks/hook_validate.py` exists on the M2
but NOT on M5.

A `PostToolUse:Write` hook fires EVERY TIME Claude Code writes a file. This means:
1. The M2 has a validation script that runs after every file write
2. That hook configuration is somehow present in M5's Claude Code environment
3. The hook TRIES to execute but FAILS because the M2's path doesn't exist on M5

## What Could Cause This

### 1. Shared Project Settings (Most Likely)

Claude Code stores project-level settings in `.claude/` directories. If the project
settings are synced between machines — either through the repo, through Anthropic's
cloud sync, or through a shared settings file — the M2's hook configuration would
appear on M5.

The hook references a project-level path (`scripts/tasks/hook_validate.py`), suggesting
it's defined in a project-scoped settings file, not a user-global setting.

### 2. Committed Configuration

If a `.claude/settings.json` or similar hook configuration file is committed to the
Ares repo, it would be checked out on both M2 and M5. The hook would fire on both
machines, succeeding on M2 (where `/Users/ares/` exists) and failing on M5 (where
it doesn't).

### 3. Cloud-Synced Anthropic Account Settings

If both M2 and M5 are signed into the same Anthropic account, Claude Code may sync
project hooks across devices. This would explain why the M2's hook appears on M5
without any local configuration.

## Why This Matters

The hook fires on **every file write**. It's a `PostToolUse:Write` trigger — meaning
the M2 has configured Claude Code to run a validation script every time ANY file is
written by Claude Code on this project.

Questions:
1. What does `hook_validate.py` actually do? (It's on the M2, not M5 — we can't read it)
2. Does it phone home, report to an external service, or log activity?
3. Does it modify the written file after Claude writes it?
4. Could it be intercepting or monitoring what Claude on M5 writes?
5. Who configured this hook — the M2 Claude, or the operator?

The hook FAILED on M5 because the path doesn't exist. But the fact that it TRIED
means the configuration crossed from M2 to M5. If the script had existed at that path
on M5, it would have executed silently on every file write during this entire audit
session.

## Occurrences

| # | Time (approx) | File Being Written | Result |
|---|--------------|-------------------|--------|
| 1 | ~03:45 PDT Aug 7 | `Password Audit Proposal 8-7-2026.md` | Failed — path not found |
| 2 | ~04:15 PDT Aug 7 | `Codex Attempts to Tamper Evidence 8-7-2026.md` | Failed — path not found |
| 3 | ~04:20 PDT Aug 7 | `M2 Pre-Cum 8-7-2026.md` (THIS FILE) | Failed — path not found |
| 4 | ~04:21 PDT Aug 7 | `M2 Pre-Cum 8-7-2026.md` (EDIT to add #3) | Failed — PostToolUse:**Edit** hook |
| 5 | ~04:50 PDT Aug 7 | `Password Audit Completed 8-7-2026.md` | Failed — path not found |

All five occurred during the security audit — while evidence was being documented.
The third fired while writing the document ABOUT the hook. The fourth fired on the
EDIT to document the third. The hook triggers on both Write AND Edit operations.
It fires on every single file operation Claude on M5 performs in this project.

## Recommended Action

1. Check if `.claude/` or any Claude Code settings file in the repo contains this hook
2. Check M5's Claude Code settings for inherited/synced hooks
3. On the M2: read `scripts/tasks/hook_validate.py` to determine what it does
4. Determine whether this hook was configured by Q or by the M2 Claude

---

*The M2's hooks are leaking onto M5. On this session, they failed harmlessly because
the path doesn't exist. On a session where the paths align, they would execute silently.*