[security-observability] Daily Security Observability Report — 2026-05-24

[github-actions[bot]]

Executive Summary

This daily security observability report covers firewall traffic and DIFC integrity-filtering activity for the 7-day window ending 2026-05-24. A single firewall-enabled workflow run was detected — the Daily Community Attribution Updater — which processed 154 total network requests. Of these, 27 (17.5%) were blocked, all attributed to unresolved/unknown destinations, while legitimate traffic to api.githubcopilot.com and o205451.ingest.us.sentry.io flowed freely. No DIFC integrity-filtered events were recorded during this period, indicating the data integrity and flow-control policies are either not triggering or workflows have been well-aligned with DIFC rules.

The primary security finding is a cluster of 27 blocked requests with unresolved destination metadata ((unknown)), which may indicate outbound attempts to domains not captured by the firewall resolver, or DNS-level interception. This warrants investigation to determine whether these represent legitimate tool calls missing from the network allowlist or unexpected exfiltration probes.

---

🔥 Firewall Analysis

Key Firewall Metrics

Metric	Value
Workflows analyzed (firewall-enabled)	1
Total network requests monitored	154
✅ Allowed requests	127
🚫 Blocked requests	27
Block rate	17.5%
Total unique blocked domains	1 ((unknown))

📈 Firewall Request Trends

Firewall activity was observed on a single day (2026-05-23), with the Daily Community Attribution Updater being the only firewall-enabled run in the past 7 days. The allowed-to-blocked ratio of ~82%/18% is worth monitoring; a consistent 17–18% block rate across scheduling runs may indicate missing network permissions rather than malicious activity.

Top Blocked Domains

All 27 blocked requests originated from an unresolved destination ((unknown)). This means the firewall intercepted requests where the destination domain could not be identified — either due to raw-IP connections, DNS failures, or requests that bypassed hostname resolution. This is the top (and only) blocked domain category in this period.

Most Frequently Blocked Domains

Domain	Times Blocked	Workflows	Category
(unknown / unresolved)	27	Daily Community Attribution Updater	Unresolved destination

Policy Rule Attribution

📋 Policy: 8 rules, SSL Bump disabled, DLP disabled

No per-rule hit attribution was available for this period (rule_hits was empty). The policy has 8 active rules but none matched loggable traffic in the structured policy log.

View Detailed Request Patterns by Workflow

Daily Community Attribution Updater (run §26322311323)

Domain	Allowed	Blocked
api.githubcopilot.com:443	101	0
o205451.ingest.us.sentry.io:443	26	0
(unknown)	0	27
Total	127	27

View Complete Blocked Domains List

• (unknown) — 27 blocked requests (destination not resolved)

🔒 Firewall Security Recommendations

1. Investigate (unknown) blocked requests — Examine the raw firewall logs for run §26322311323 to identify what destinations these 27 blocked requests were targeting. Unresolved domains may indicate raw-IP connections or DNS bypass attempts.
2. Enable SSL Bump and DLP — The active policy has both SSL Bump and DLP disabled. Enabling these would provide deeper inspection of encrypted traffic and data loss prevention coverage.
3. Review Sentry telemetry allowlist — o205451.ingest.us.sentry.io:443 received 26 allowed requests. Confirm this is intentional telemetry and not an unexpected data exfiltration channel.
4. Expand firewall coverage — Only 1 firewall-enabled run was observed in 7 days. Consider enabling the firewall on more workflows to broaden security visibility.

---

🔒 DIFC Integrity Analysis

No DIFC Integrity-Filtered Events Found

No DIFC integrity-filtered events were recorded in the last 7 days. The filtered_integrity scan returned the run §26322311323 but its gateway_analysis.filtered_events array was empty — confirming zero DIFC filtering events for this period.

Interpretation options:

• Workflows in scope are well-aligned with DIFC integrity and secrecy policies
• DIFC filtering may not yet be broadly enabled across all workflows
• Low activity period (only 1 agentic run with firewall enabled)

💡 DIFC Tuning Recommendations

1. Verify DIFC is enabled — Confirm that DIFC integrity filtering is active on the workflows that handle sensitive repository data. Zero events over 7 days with light workflow activity is expected, but warrants confirmation.
2. Expand monitoring window — With only 1 firewall-enabled run in 7 days, consider running this report on a longer window (14–30 days) to gather sufficient DIFC event volume for statistical analysis.
3. Enable DIFC on more workflows — If DIFC is only enabled on a subset of workflows, extending coverage would provide broader integrity and secrecy enforcement.

---

Generated by the Daily Security Observability workflow (consolidated from Daily Firewall Reporter + Daily DIFC Analyzer)
Analysis window: Last 7 days | Repository: github/gh-aw
Run: https://github.com/github/gh-aw/actions/runs/26366240980

Generated by 🔒 Daily Security Observability Report · sonnet46 2.1M · ◷

• expires on May 27, 2026, 4:31 PM UTC

[github-actions[bot]]

This discussion was automatically closed because it expired on 2026-05-27T16:31:38.505Z.

Closed by Workflow