Files
rb/sec/google-evidence.md
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igodwin cb0c5b4614 Move runbooks into domain directories
od-db-backup.md becomes od/db-backup.md -- the hyphen becomes a slash, so
the fetch command is exactly as long to type as before. That mattered: the
length of a hand-typed command is the constraint this repo is organized
around, and a reorganization that lengthened it would have been a net loss.

Scripts deliberately stay flat in scripts/ with their domain prefix.
Everything executable in one directory is the set worth reading before it
runs, and nesting five files by domain would add characters without adding
clarity.

Updates every reference: README Contents (now grouped by directory), the
layout section, both fetch examples, inter-runbook links, and the .NOTES
headers in all five scripts. Verified every markdown link resolves on disk
and that Contents and the filesystem agree in both directions.

Records the naming rule in CONTRIBUTING so the next file lands correctly.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HwcG1jLs1T425QRMxtjxP7
2026-09-02 23:15:48 -07:00

4.0 KiB

Runbook: Google account — evidence capture + re-entry check

For qualified IT professionals, on systems they are authorized to administer. Provided as-is, without warranty — verify it fits your environment. See LICENSE.

Applies to: A consumer Google/Gmail account, before or after containment. No Workspace admin console required. Use it for: (a) capturing account state before you change anything, and (b) checking whether anyone got back in after a password reset. Companion: sec/google-compromise.md — full containment procedure.

Placeholders:

Placeholder Meaning
<ACCOUNT> The Google account under review
<RESET_TIME> Date/time of the password reset — the re-entry baseline
<COMPROMISE_START> Earliest known date of compromise
<EVIDENCE_DIR> Folder for screenshots, e.g. Desktop\Account Records

Rules:

  • Sign in once. Gmail keeps ~10 recent-activity entries; re-authenticating pushes older ones off.
  • Screenshot everything, including empty results.
  • Change nothing until Part C.
  • Anything dated after <RESET_TIME> that isn't you = they got back in.

Part A — do first

1. gmail.com → bottom of inbox → "Last account activity" → Details → screenshot 01-signin-list (scroll, second shot if needed) → Look for: access after <RESET_TIME>.

2. myaccount.google.com → Security → Recent security activity → See all → screenshot 02-security-activity → Look for: anything after <RESET_TIME>.

3. Security → Your devices → Manage all devices → screenshot 03-devices → Look for: any session you didn't sign in.


Part B — export check

4. takeout.google.com → Your exports / Manage exports → screenshot 04-takeout — screenshot it even if empty. → Takeout copies the whole mailbox in one archive. It is the bulk-exfiltration path.

5. Gmail search: in:anywhere from:google.com → screenshot results 05-google-alerts → open + screenshot each: Security alert · New sign-in · password changed · "Your data is ready to download" → in:anywhere includes Trash and Spam, where these are usually deleted to.

6. Gmail search: in:anywhere after:<RESET_TIME date> → screenshot 06-since-reset

Don't delete anything. Don't empty Trash.


Part C — persistence

7. myaccount.google.com/permissions → screenshot list 07-oauth → open each grant → screenshot name + scopes + date authorized 07b… → then remove every grant you cannot positively attribute. → Authorized on/after <COMPROMISE_START> = attacker-created. → OAuth grants survive password resets and session revocation.

8. Gmail → gear → See all settings:

  • Forwarding and POP/IMAP → screenshot 08-forwarding — note any pending/unconfirmed address
  • Filters and Blocked Addresses → screenshot 09-filters → select all → Export → save the XML
  • Accounts and Import → screenshot 10-accounts — Send mail as · Grant access to your account

9. myaccount.google.com/signinoptions/passkeys → screenshot 11-passkeys → Any passkey you didn't enroll → remove.

10. Security → 2-Step Verification → screenshot 12-2sv → Recovery phone + recovery email → screenshot 13-recovery

11. myaccount.google.com/apppasswords → screenshot 14-apppasswords → revoke all. App passwords bypass 2-Step Verification.


Before you leave

  • Nothing deleted, Trash not emptied
  • <EVIDENCE_DIR> left on the machine
  • Time finished written down
  • Screenshots not emailed

Results

Step Finding Screenshot
1
2
3
4
5
6
7 name / scopes / authorized date:
8
9
10
11

Menu wording drifts; the myaccount.google.com/... links are the durable part. If a path doesn't match, navigate from myaccount.google.com → Security and record the path you used.