[security-observability] Daily Security Observability Report — 2026-07-04 #43420
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Executive Summary
The Daily Security Observability Report for 2026-07-04 covers the last 7 days of agentic workflow activity across the github/gh-aw repository. Two complementary security signals were analyzed: firewall network traffic patterns and DIFC integrity-filtered events.
Firewall analysis examined 29 sandboxed workflow runs, monitoring 1,517 total network requests with a very low block rate of 0.79% (12 blocked, 1,505 allowed). The dominant allowed destinations were AI inference endpoints (api.githubcopilot.com, api.anthropic.com) and telemetry services (sentry.io, grafana.net). Blocked traffic was primarily attributable to Google services attempted from Playwright-based browser automation and Go module proxy access — both expected patterns.
DIFC integrity analysis found zero filtered events in the last 7 days. The DIFC gateway is active and configured across all runs but no tool calls were blocked by integrity or secrecy policy enforcement during the analysis window, indicating clean information-flow behavior.
🔥 Firewall Analysis
Key Firewall Metrics
📈 Firewall Request Trends
Firewall activity shows consistently low block rates across all 8 days with available data. The most significant blocked volume occurred on 2026-06-22 (historical cache: 8,345 blocked vs 4,447 allowed) — a significant anomaly suggesting a Playwright-heavy workload or browsing-heavy workflow that day. Recent days (June 25–July 4) show clean, low-volume traffic dominated by AI API calls with near-zero blocking.
Top Blocked Domains
Google-ecosystem domains (www.google.com, content-autofill.googleapis.com, accounts.google.com) dominate blocked traffic, consistent with Playwright browser automation that attempts to reach Google's authentication and content services. The
proxy.golang.orgblocks indicate Go tooling attempting to fetch modules — a pattern expected in workflows that compile or run Go code without the domain allowlisted.awmg-mcpginternal POST blocks (9 occurrences) relate to the MCP gateway service being accessible only through non-proxied paths.Most Frequently Blocked Domains
View Detailed Request Patterns by Workflow
View Complete Allowed Domains
🔒 Firewall Security Recommendations
Allowlist
proxy.golang.orgfor workflows that run Go builds or tests — 5 blocked attempts indicate these workflows need Go module access but don't declare it in theirallowed_domains. Addproxy.golang.orgto the relevant workflow frontmatter.Review the 2026-06-22 spike — 8,345 blocked requests in a single day is anomalous. Identify which workflow(s) ran that day with Playwright and whether the browser automation scope was appropriate.
Playwright domain allowlisting — If Playwright browser automation is intentional in workflows, consider whether
*.google.com,accounts.google.com, and related CDN domains should be explicitly allowlisted or whether the tests should be scoped to avoid external auth flows.awmg-mcpginternal blocks — These 9 blocks on the internal MCP gateway host suggest an agent attempted to reach the gateway over the proxied network path. Verify the gateway connectivity configuration is consistent across all workflow types.docs.astro.buildblock — Investigate which workflow attempted to access Astro documentation and whether this indicates an unintended external lookup or documentation generation workflow needing allowlisting.🔒 DIFC Integrity Analysis
Key DIFC Metrics
📈 DIFC Events Over Time
No DIFC integrity-filtered events were recorded in the last 7 days. The DIFC gateway is active (v0.3.30–v0.3.33 across all runs) and the
write-sinkguard is consistently configured. The absence of filtered events indicates that all agent tool calls satisfied the configured information-flow policies.🔧 Top Filtered Tools
No tool calls were filtered by DIFC in the analysis window.
🏷️ Filter Reasons and Tags
No integrity or secrecy tag violations were recorded. The
filtered-logs.snapshot.jsoncache (updated 2026-06-23) also confirmed zero DIFC events in the prior period, suggesting a sustained clean signal.📋 Per-Workflow DIFC Breakdown
No DIFC filtered events in the analysis window.
📋 Per-Server DIFC Breakdown
No DIFC filtered events in the analysis window. Active MCP servers observed:
safeoutputs, withwrite-sinkguard policy enforcingaccept: ["*"].👤 Per-User DIFC Breakdown
No filtered events. Workflows run under
scheduletrigger (actor:pelikhan).💡 DIFC Tuning Recommendations
Verify DIFC guard coverage — The current
write-sinkguard withaccept: ["*"]is permissive. Consider whether stricter integrity or secrecy tag policies should be applied for external-trigger workflows (e.g.,pull_requestorissue_commentevents).Maintain cached baseline — The
filtered-logs.snapshot.jsonis from 2026-06-23 (11 days old). Update the cache after this run to preserve the clean baseline for future anomaly detection.Expand DIFC guard policies — Now that DIFC infrastructure is stable and producing zero false positives, evaluate adding per-workflow guard policies (e.g., restricting which tools can be called after processing untrusted issue/PR body content).
Monitor for future spikes — Zero events is the expected baseline. Any non-zero count in future runs warrants investigation into which workflow and tool combination triggered the filter.
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: §28712039906
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