fotospiel-app/docs/deployment/public-api-incident-playbook.md

Public API Incident Response Playbook (SEC-API-02)

Scope: Guest-facing API endpoints that rely on join tokens and power the guest PWA plus the public gallery. This includes:

• /api/v1/events/{token}/* (stats, tasks, uploads, photos)
• /api/v1/gallery/{token}/*
• Signed download/asset routes generated via EventPublicController

The playbook focuses on abuse, availability loss, and leaked content.

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1. Detection & Alerting

Signal	Where to Watch	Notes
4xx/5xx spikes	Application logs (storage/logs/laravel.log), centralized logging	Look for repeated Join token access denied / token_rate_limited or unexpected 5xx.
Rate-limit triggers	Laravel log lines emitted from EventPublicController::handleTokenFailure	Contains IP + truncated token preview.
CDN/WAF alerts	Reverse proxy (if enabled)	Ensure 429/403 anomalies are forwarded to incident channel.
Synthetic monitors	Planned via SEC-API-03	Placeholder until monitors exist.

Manual check commands:

php artisan log:tail --lines=200 | grep "Join token"
php artisan log:tail --lines=200 | grep "gallery"

2. Severity Classification

Level	Criteria	Examples
SEV-1	Wide outage (>50% error rate), confirmed data leak or malicious mass-download	Gallery downloads serving wrong event, join-token table compromised.
SEV-2	Localised outage (single tenant/event) or targeted brute force attempting to enumerate tokens	Single event returning 500, repeated invalid_token from single IP range.
SEV-3	Minor functional regression or cosmetic issue	Rate limit misconfiguration causing occasional 429 for legitimate users.

Escalate SEV-1/2 immediately to on-call via Slack #incident-response and open PagerDuty incident (if configured).

3. Immediate Response Checklist

1. Confirm availability
   • curl -I https://app.test/api/v1/gallery/{known_good_token}
   • Use tenant-provided test token to validate /events/{token} flow.
2. Snapshot logs
   • Export last 15 minutes from log aggregator or storage/logs. Attach to incident ticket.
3. Assess scope
   • Identify affected tenant/event IDs via log context.
   • Note IP addresses triggering rate limits.
4. Decide mitigation
   • Brute force? → throttle/bock offending IPs.
   • Compromised token? → revoke token via Filament or php artisan tenant:join-tokens:revoke {id} (once command exists).
   • Endpoint regression? → begin rolling fix or feature flag toggle.

4. Mitigation Tactics

4.1 Abuse / Brute force

• Increase rate-limiter strictness temporarily by editing config/limiting.php (if available) or applying runtime block in the load balancer.
• Use fail2ban/WAF rules to block offending IPs. For quick local action:

  sudo ufw deny from <ip_address>
  

• Consider temporarily disabling gallery download by setting PUBLIC_GALLERY_ENABLED=false (feature flag planned) and clearing cache.

4.2 Token Compromise

• Revoke specific token via Filament “Join Tokens” modal (Event → Join Tokens → revoke).
• Notify tenant with replacement token instructions.
• Audit join-token logs for additional suspicious use and consider rotating all tokens for the event.

4.3 Internal Failure (500s)

• Tail logs for stack traces.
• If due to downstream storage, fail closed: return 503 with maintenance banner while running php artisan storage:diagnostics.
• Roll back recent deployment or disable new feature flag if traced to release.

5. Communication

Audience	Channel	Cadence
Internal on-call	Slack #incident-response, PagerDuty	Initial alert, hourly updates.
Customer Support	Slack #support with summary	Once per significant change (mitigation applied, issue resolved).
Tenants	Email template “Public gallery disruption” (see resources/lang/*/emails.php)	Only for SEV-1 or impactful SEV-2 after mitigation.

Document timeline, impact, and mitigation in the incident ticket.

6. Verification & Recovery

After applying mitigation:

1. Re-run test requests for affected endpoints.
2. Validate join-token creation/revocation via Filament.
3. Confirm error rates return to baseline in monitoring/dashboard.
4. Remove temporary firewall blocks once threat subsides.

7. Post-Incident Actions

• File RCA within 48 hours including: root cause, detection gaps, follow-up tasks (e.g., enabling synthetic monitors, adding audit fields).
• Update documentation if new procedures are required (docs/prp/11-public-gallery.md, docs/prp/03-api.md).
• Schedule backlog items for long-term fixes (e.g., better anomaly alerting, token analytics dashboards).

8. References & Tools

• Log aggregation: storage/logs/laravel.log (local), Stackdriver/Splunk (staging/prod).
• Rate limit config: App\Providers\AppServiceProvider → RateLimiter::for('tenant-api') and EventPublicController::handleTokenFailure.
• Token management UI: Filament → Events → Join Tokens.
• Signed URL generation: app/Http/Controllers/Api/EventPublicController (for tracing download issues).

Keep this document alongside the other deployment runbooks and review quarterly.