[security-observability] Daily Security Observability Report — 2026-05-31

[github-actions[bot]]

Executive Summary

On 2026-05-31, the gh-aw agentic workflow platform recorded 41 firewall-enabled runs across 26 distinct workflows in a single day. Of the 7 runs sampled for deep audit, 202 total network requests were observed — 164 allowed (81.2%) and 38 blocked (18.8%). All blocked traffic was attributed to the (unknown) domain category, indicating requests to destinations not resolvable by the firewall proxy or falling outside any named allow-rule. No policy-level rule attribution was available for these blocks.

On the DIFC front, zero integrity-filtered events were recorded in the last 7 days. The DIFC system did not trigger any tool-call filtering, indicating that all agentic tool usage during this window remained within declared integrity and secrecy boundaries. This is a positive signal for data-flow compliance.

The primary action item from this report is to investigate the 38 (unknown) blocked requests across PR Sous Chef and Daily SPDD Spec Planner workflows, and determine whether those requests represent legitimate destinations that need allowlisting or adversarial network probes.

---

🔥 Firewall Analysis

Key Firewall Metrics

Metric	Value
Workflows analyzed (firewall-enabled)	7 (of 41 total firewall-enabled runs)
Total network requests monitored	202
✅ Allowed requests	164
🚫 Blocked requests	38
Block rate	18.8%
Total unique blocked domain categories	1 ((unknown))

📈 Firewall Request Trends

All 41 firewall-enabled runs occurred on 2026-05-31 — the 7-day window shows concentrated activity in a single day. The stacked bar chart above breaks down allowed vs blocked requests per workflow. PR Sous Chef and Daily SPDD Spec Planner are the only two workflows generating blocked traffic, with 19 blocked requests each.

Top Blocked Domains

All blocked requests are attributed to the (unknown) category — destinations that the firewall proxy could not match to any named rule or resolvable domain. This warrants investigation into which specific IPs or hostnames are being attempted. The top allowed domains are api.githubcopilot.com:443 (118 requests), o205451.ingest.us.sentry.io:443 (33 requests), and api.anthropic.com:443 (13 requests).

Most Frequently Blocked Domains

Domain	Times Blocked	Workflows
(unknown)	38	PR Sous Chef, Daily SPDD Spec Planner

View Detailed Request Patterns by Workflow

Workflow	Allowed	Blocked	Block Rate
PR Sous Chef	44	19	30.2%
PR Description Updater	44	0	0%
Smoke CI	4	0	0%
Daily SPDD Spec Planner	57	19	25.0%
Design Decision Gate	15	0	0%

View Allowed Domains

Domain	Request Count
api.githubcopilot.com:443	118
o205451.ingest.us.sentry.io:443	33
api.anthropic.com:443	13

🔒 Firewall Security Recommendations

1. Investigate (unknown) blocked requests — Run gh aw audit <run-id> on PR Sous Chef and Daily SPDD Spec Planner runs and examine the raw firewall proxy logs to identify which specific hostnames or IPs are being blocked. The 19-request blocks in each workflow suggest a repeating pattern, possibly a retry loop hitting a missing allowlist entry.
2. Add explicit allow rules for legitimate destinations — If the (unknown) blocks resolve to known-safe services (e.g., package registries, external APIs), add named allow rules to the firewall policy to improve observability and reduce false-positive block noise.
3. Expand audit coverage — Only 7 of 41 firewall-enabled runs were deep-audited. Automate full-run auditing to capture the complete blocked-domain picture across all workflows.
4. Monitor Sentry ingestion endpoint — o205451.ingest.us.sentry.io:443 is allowed at 33 requests. Confirm this is intentional and that no sensitive workflow data is being included in error payloads.

---

🔒 DIFC Integrity Analysis

Key DIFC Metrics

Metric	Value
Total filtered events	0
Unique tools filtered	0
Unique workflows affected	0
Most common filter reason	N/A
Busiest day	N/A

📈 DIFC Events Over Time

No DIFC integrity-filtered events were recorded in the last 7 days. The DIFC system was active but did not trigger any tool-call filtering, indicating clean data-flow compliance across all agentic sessions.

🔧 Top Filtered Tools

No tools were filtered during this period.

🏷️ Filter Reasons and Tags

No filtering reasons or integrity/secrecy tags were recorded during the 7-day window.

💡 DIFC Tuning Recommendations

1. Maintain current DIFC configuration — Zero filtered events over 7 days with active agentic workflows indicates the integrity policy is appropriately calibrated. No tuning is needed at this time.
2. Verify DIFC coverage on high-risk workflows — Confirm that workflows with write-actuation capabilities (e.g., PR creation, issue modification) are included in DIFC monitoring scope to ensure continued clean reporting.
3. Establish a baseline alert threshold — With 0 events as the 7-day baseline, configure an alert for any day exceeding 5 filtered events to catch sudden policy violations early.

---

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

References:
§26717767921

Generated by 🔒 Daily Security Observability Report · sonnet46 4.5M · ◷

• expires on Jun 3, 2026, 4:40 PM UTC