[security-observability] Daily Security Observability Report — 2026-06-30

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Executive Summary

Over the last 7 days, the agentic workflow security posture shows active firewall enforcement with 108 runs analyzed. The firewall intercepted a total of 17,636 network requests, of which 9,121 (51.7%) were blocked and 8,515 (48.3%) were allowed. The peak blocking activity occurred on 2026-06-22, where 8,345 blocked requests were recorded — predominantly Google-linked domains and localhost probe attempts — consistent with a Chrome/Playwright-based workflow run that triggered browser telemetry. On the DIFC front, zero integrity-filtered events were recorded in the last 7 days, indicating that the MCP Gateway data-flow control layer saw no policy violations.

The firewall continues to effectively block out-of-policy domains including Google consumer services (www.google.com, accounts.google.com, content-autofill APIs), browser CDN endpoints (playwright.azureedge.net), and unexpected package proxies (proxy.golang.org). Two notable events — github.com:443 and api.github.com:443 being blocked — warrant attention as they could indicate workflows needing explicit GitHub allowlist entries.

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🔥 Firewall Analysis

Key Firewall Metrics

Metric	Value
Workflows analyzed (firewall-enabled)	108
Total network requests monitored	17,636
✅ Allowed requests	8,515
🚫 Blocked requests	9,121
Block rate	51.7%
Total unique blocked domains	16

📈 Firewall Request Trends

Request volume shows a pronounced spike on 2026-06-22 (8,345 blocked + 4,447 allowed = 12,792 total), which represents an outlier compared to typical daily traffic. On 2026-06-24, a more balanced pattern emerged with 4,068 allowed vs 776 blocked. The 2026-06-30 data reflects only baseline comparison runs (no production firewall logs yet for today).

Top Blocked Domains

The top blocked domains are dominated by Google consumer services, suggesting workflows that invoke browser automation (Playwright/Chrome) are generating unsanctioned external requests. The presence of localhost:8080 as the 3rd most blocked domain (14 hits) indicates development-mode service calls that are not permitted in production.

Most Frequently Blocked Domains

Domain	Times Blocked	Category
www.google.com:443	18	🌐 Google Consumer
content-autofill.googleapis.com:443	14	🌐 Google API
localhost:8080	14	🏠 Local / Dev
(unknown)	13	❓ Unknown
accounts.google.com:443	10	🌐 Google Auth
android.clients.google.com:443	5	🌐 Google Mobile
safebrowsingohttpgateway.googleapis.com:443	5	🌐 Google SafeBrowse
antigravity-unleash.goog:443	2	🚩 Suspicious
clients2.google.com	2	🌐 Google Client
proxy.golang.org:443	2	📦 Go Package Proxy
playwright-akamai.azureedge.net:443	1	🎭 Playwright CDN
playwright-verizon.azureedge.net:443	1	🎭 Playwright CDN
playwright.azureedge.net:443	1	🎭 Playwright CDN
api.github.com:443	1	⚠️ GitHub API
github.com:443	1	⚠️ GitHub
docs.astro.build:443	1	📄 Docs

View Complete Blocked Domains List (Alphabetical)

• accounts.google.com:443
• android.clients.google.com:443
• antigravity-unleash.goog:443
• api.github.com:443
• clients2.google.com
• content-autofill.googleapis.com:443
• docs.astro.build:443
• github.com:443
• localhost:8080
• playwright-akamai.azureedge.net:443
• playwright-verizon.azureedge.net:443
• playwright.azureedge.net:443
• proxy.golang.org:443
• safebrowsingohttpgateway.googleapis.com:443
• (unknown)
• www.google.com:443

🔒 Firewall Security Recommendations

1. Investigate api.github.com and github.com blocks — These domains appear in the blocked list. If any workflow legitimately needs to call the GitHub API, ensure those domains are explicitly added to the firewall allowlist for that workflow's policy rule.
2. Review antigravity-unleash.goog block — This unusual domain (2 hits) should be investigated. It may be a feature-flag service embedded in a dependency. Confirm the source workflow and whether it needs allowlisting.
3. Suppress Playwright/Chrome telemetry — The 16 combined blocked hits from playwright*.azureedge.net and Google APIs are normal browser startup telemetry. Workflows using Playwright should disable telemetry via --disable-extensions --no-sandbox flags or env vars to reduce noise.
4. Restrict localhost:8080 — 14 blocked requests to localhost suggest a workflow is attempting to call a local service at startup. Review whether the service should be pre-started or if the calls are erroneous.
5. Tighten proxy.golang.org access — 2 hits. Go module proxy calls during test workflows should be evaluated. If needed, add to the allowed list for build-oriented workflows only.
6. Monitor the 2026-06-22 spike — The 8,345 blocked requests in one day (65% of the 7-day total) warrants investigation. Identify which workflow generated this traffic and confirm it was expected behavior.

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🔒 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 MCP Gateway's data-flow integrity and secrecy controls did not trigger any filtering actions, indicating that all tool calls operated within their declared integrity and secrecy boundaries.

🔧 Top Filtered Tools

No tools were filtered during this period.

🏷️ Filter Reasons and Tags

No integrity or secrecy tags were triggered in this reporting window.

📋 Per-Workflow DIFC Breakdown

No workflows had DIFC filtered events in the last 7 days.

📋 Per-Server DIFC Breakdown

No MCP servers had filtered events in the last 7 days.

👤 Per-User DIFC Breakdown

No user-triggered filtered events in the last 7 days.

💡 DIFC Tuning Recommendations

1. Baseline is healthy — Zero filtered events confirm that current integrity and secrecy policies are not causing false positives or blocking legitimate tool calls.
2. Continue monitoring as new workflows are added — When new workflows with higher-privilege tools are introduced, monitor DIFC metrics for the first 7 days to catch misconfigured secrecy/integrity tag assignments.
3. Enable DIFC metrics alerting — Consider setting up a threshold alert if DIFC events exceed a threshold (e.g., >10/day) to catch regressions early.

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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/28460223610

Generated by 🔒 Daily Security Observability Report · 162.5 AIC · ⌖ 16.2 AIC · ⊞ 2.2K · ◷

• expires on Jul 3, 2026, 9:13 AM UTC-08:00