[security-observability] Daily Security Observability Report — 2026-06-22

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Executive Summary

This report covers the combined security observability posture for github/gh-aw over the last 7 days (2026-06-16 through 2026-06-22). The firewall signal shows 60 firewall-enabled workflow runs producing 12,792 network requests, with a notably elevated block rate of 65.2% — driven by browser automation tests (Playwright) and some workflows attempting access to Google services outside the allowlist. The DIFC integrity-filtering system recorded zero filtered events in this period, indicating no data-flow policy violations were triggered across all agentic runs.

The dominant blocked category is Google-ecosystem domains (Google Accounts, Autofill APIs, Safe Browsing gateway) consistent with headless browser workflows attempting to reach advertising/tracking infrastructure. The localhost:8080 blocks are expected firewall self-test traffic. No anomalous or suspicious outbound patterns were observed.

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Firewall Analysis

Key Firewall Metrics

Metric	Value
Workflows analyzed (firewall-enabled)	60
Total network requests monitored	12,792
Allowed requests	4,447
Blocked requests	8,345
Block rate	65.2%
Total unique blocked domains	13

Firewall Request Trends

Firewall activity shows two data points in the 7-day window: June 16 (low volume, 1,163 total requests, only 87 blocked / 7.5% block rate) and June 22 (high volume, 12,792 requests, 8,345 blocked / 65.2% block rate). The sharp increase on June 22 corresponds to the large batch of PR review and code quality workflows running simultaneously. The high block rate on June 22 is primarily attributable to Playwright browser automation reaching Google tracking/autofill APIs not covered by any workflow's allowlist.

Top Blocked Domains

Google-owned infrastructure accounts for 10 of the 13 unique blocked domains, totalling 51 of 87 historical blocks. The localhost:8080 blocks are internal infrastructure checks. Playwright CDN endpoints (playwright.azureedge.net and variants) are blocked in some workflows that haven't declared the Playwright CDN as an allowed domain. The proxy.golang.org block warrants attention for Go-based workflows.

Most Frequently Blocked Domains

Domain	Times Blocked	Category
www.google.com:443	18	Google Web
content-autofill.googleapis.com:443	14	Google APIs
localhost:8080	14	Internal/Firewall self-test
(unknown)	13	Unresolved
accounts.google.com:443	10	Google Auth
android.clients.google.com:443	5	Google Android APIs
safebrowsingohttpgateway.googleapis.com:443	5	Google Safe Browsing
antigravity-unleash.goog:443	2	Google Internal
clients2.google.com	2	Google Clients
playwright-akamai.azureedge.net:443	1	Playwright CDN
playwright-verizon.azureedge.net:443	1	Playwright CDN
playwright.azureedge.net:443	1	Playwright CDN
proxy.golang.org:443	1	Go Module Proxy

View Detailed Request Patterns by Workflow

Top workflows by blocked requests (2026-06-22):

Workflow	Blocked	Allowed	Total
PR Description Updater	173	62	235
Matt Pocock Skills Reviewer	152	82	234
Test Quality Sentinel	164	141	305
PR Sous Chef	61	42	103
Repository Tree Map Generator	68	33	101
Agent Persona Explorer	66	39	105
Issue Monster	39	21	60
Smoke CI (×2)	44	4	48
Design Decision Gate	30	17	47

View Complete Blocked Domains List

• (unknown)
• accounts.google.com:443
• android.clients.google.com:443
• antigravity-unleash.goog:443
• clients2.google.com
• content-autofill.googleapis.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
• www.google.com:443

Firewall Security Recommendations

1. Playwright CDN allowlist: Workflows using Playwright should add *.azureedge.net (or more specifically playwright.azureedge.net, playwright-akamai.azureedge.net, playwright-verizon.azureedge.net) to their firewall allowlist to avoid blocking CDN resources.
2. Go module proxy: Go-based workflows making dependency lookups should add proxy.golang.org to their allowlist.
3. Google API blocks are expected: The high volume of Google service blocks (accounts.google.com, content-autofill.googleapis.com, safebrowsingohttpgateway.googleapis.com) are consistent with browser automation reaching default Chrome tracking APIs — these are safe to leave blocked.
4. Investigate (unknown) domain blocks: 13 requests were blocked to an unresolvable domain — review workflow logs to identify what service is being contacted.
5. Monitor block rate trend: The spike from 7.5% to 65.2% between June 16 and June 22 may reflect new workflows or configuration changes — validate that all new workflows have correct allowlists.

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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

No DIFC integrity-filtered events found in the last 7 days. The Data Integrity and Flow Control system did not block any tool calls across all agentic workflow runs in this period. This is the expected healthy state.

DIFC Events Over Time

No DIFC events were recorded in the analysis window, indicating that all tool calls satisfied their integrity and secrecy policy constraints. The absence of filtering events suggests that workflows are well-configured with appropriate trust boundaries.

Top Filtered Tools

No tool calls were filtered by the DIFC system in this period.

Filter Reasons and Tags

No integrity or secrecy tag violations were recorded.

Per-Workflow DIFC Breakdown

No DIFC-filtered events to report.

Per-Server DIFC Breakdown

No DIFC-filtered events to report.

Per-User DIFC Breakdown

No DIFC-filtered events to report.

DIFC Tuning Recommendations

1. Maintain current configuration: Zero filtered events in 7 days indicates the DIFC policy is well-tuned with no over- or under-blocking.
2. Continue monitoring: Set up alerting if DIFC events appear in future runs, as even a single event could indicate a workflow attempting to pass untrusted data to a sensitive tool.
3. Review after workflow additions: Each new workflow added to the repository should be reviewed for DIFC compliance to maintain the current clean state.

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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: §27970938043

Generated by 🔒 Daily Security Observability Report · 114.2 AIC · ⌖ 12.9 AIC · ⊞ 12.1K · ◷

• expires on Jun 25, 2026, 9:42 AM UTC-08:00

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