[security-observability] Daily Security Observability Report — 2026-08-24

[github-actions[bot]]

Executive Summary

Over the last 7 days, 88 of 95 successfully audited firewall-enabled workflow runs (100 identified) generated 5,834 total network requests, of which 768 (13.16%) were blocked. The dominant blocked domain by far was proxy.golang.org:443 (668 blocks), concentrated in the CI Optimization Coach workflow, suggesting a Go-module proxy access pattern that is either intentionally restricted or needs an allowlist review. A long tail of single-hit blocks (mostly certificate/OCSP/CRL validation domains and package registries such as pypi.org, packages.microsoft.com, registry.npmjs.org) points to routine TLS/package-manager chatter rather than malicious activity.

No DIFC integrity-filtered events were found in the last 7 days — the gateway logs (/tmp/gh-aw/agent/integrity/filtered-logs.json) returned zero runs, and the warm-start cache snapshot likewise shows total_runs: 0. This means no tool calls were flagged for integrity or secrecy violations during this window, indicating either low policy trigger conditions or reduced coverage of MCP servers instrumented with DIFC in this period.

There is no cross-cutting workflow overlap to report between the two signals since DIFC produced no data this cycle. The primary actionable finding is the concentrated proxy.golang.org blocking pattern, which merits a policy review to confirm intent.

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🔥 Firewall Analysis

Key Firewall Metrics

Metric	Value
Workflows analyzed (firewall-enabled)	88 (of 100 identified; 95 successfully audited)
Total network requests monitored	5,834
✅ Allowed requests	5,066
🚫 Blocked requests	768
Block rate	13.16%
Total unique blocked domains	60

📈 Firewall Request Trends

All audited runs fell on a single calendar day (2026-08-24) within the sampling window, showing 5,066 allowed vs. 768 blocked requests. The high allowed-to-blocked ratio (~6.6:1) indicates network policies are generally permissive for expected traffic, with blocking concentrated on a small number of specific domains rather than broad categories.

Top Blocked Domains

proxy.golang.org:443 dominates blocked traffic with 668 hits — nearly 87% of all blocked requests — concentrated in Go-related CI workflows. registry.npmjs.org:443 (16 blocks) and storage.googleapis.com:443 (5 blocks) are distant runners-up. The remaining ~57 domains each show only 1 block, largely certificate-validation (OCSP/CRL) and package-manager domains typical of build/dependency-resolution steps.

Most Frequently Blocked Domains

Domain	Times Blocked	Notes
proxy.golang.org:443	668	Go module proxy — dominant blocked domain
registry.npmjs.org:443	16	npm package registry
storage.googleapis.com:443	5	Google Cloud Storage
*.grafana.net	1	Observability/telemetry
*.sentry.io	1	Error tracking
api.business.githubcopilot.com	1	Copilot API variant
api.enterprise.githubcopilot.com	1	Copilot API variant
api.github.com	1	GitHub REST API
api.githubcopilot.com	1	Copilot API
api.individual.githubcopilot.com	1	Copilot API variant
api.snapcraft.io	1	Snap package store
archive.ubuntu.com	1	Ubuntu APT mirror
azure.archive.ubuntu.com	1	Ubuntu APT mirror (Azure)
crl.geotrust.com	1	Certificate revocation list
crl.globalsign.com	1	Certificate revocation list
crl.identrust.com	1	Certificate revocation list
crl.sectigo.com	1	Certificate revocation list
pypi.org	1	Python package index
packages.microsoft.com	1	Microsoft package repo
pkg.go.dev	1	Go package documentation

Policy configuration observed across runs: 5 distinct rule-set variants were seen (8, 9, 10, 11, and 12 rules), all with SSL Bump and DLP disabled. Rule-level hit attribution was not populated in the audited runs' policy_analysis.rule_hits field for this window.

View Detailed Request Patterns by Workflow (Top 15 by total traffic)

Workflow	Allowed	Blocked
CI Optimization Coach	234	534
Q	453	134
PR Sous Chef	409	0
Code Scanning Fixer	313	80
PR Code Quality Reviewer	300	0
Daily File Diet	248	0
Matt Pocock Skills Reviewer	247	0
Deep Report	245	0
[aw] Failure Investigator (6h)	236	0
Dead Code Removal Agent	221	7
PR Description Updater	187	0
Claude Code User Documentation Review	172	0
Daily Go Test Parallelizer	168	1
Daily Agent of the Day Blog Writer	160	0
Contribution Check	140	0

View Complete Blocked Domains List (alphabetical)

*.grafana.net, *.sentry.io, api.business.githubcopilot.com, api.enterprise.githubcopilot.com, api.github.com, api.githubcopilot.com, api.individual.githubcopilot.com, api.snapcraft.io, archive.ubuntu.com, awmg-cli-proxy, awmg-mcpg, azure.archive.ubuntu.com, crl.geotrust.com, crl.globalsign.com, crl.identrust.com, crl.sectigo.com, crl.thawte.com, crl.usertrust.com, crl.verisign.com, crl3.digicert.com, crl4.digicert.com, crls.ssl.com, github.com, go.dev, golang.org, goproxy.io, host.docker.internal, json-schema.org, json.schemastore.org, keyserver.ubuntu.com, ocsp.digicert.com, ocsp.geotrust.com, ocsp.globalsign.com, ocsp.identrust.com, ocsp.sectigo.com, ocsp.ssl.com, ocsp.thawte.com, ocsp.usertrust.com, ocsp.verisign.com, packagecloud.io, packages.cloud.google.com, packages.microsoft.com, pkg.go.dev, ppa.launchpad.net, proxy.golang.org, proxy.golang.org:443, pypi.org, raw.githubusercontent.com, registry.npmjs.org, registry.npmjs.org:443, s.symcb.com, s.symcd.com, security.ubuntu.com, storage.googleapis.com, storage.googleapis.com:443, sum.golang.org, telemetry.enterprise.githubcopilot.com, ts-crl.ws.symantec.com, ts-ocsp.ws.symantec.com, www.googleapis.com

🔒 Firewall Security Recommendations

1. Review proxy.golang.org restriction — it accounts for ~87% of all blocks. If Go workflows (notably CI Optimization Coach) legitimately need module-proxy access, add it to the allowlist; otherwise confirm the block is intentional and workflows aren't retrying/wasting cycles.
2. Allowlist common package-manager domains if seen recurring (registry.npmjs.org, pypi.org, packages.microsoft.com) to reduce noise from routine dependency resolution, provided this doesn't conflict with security posture.
3. No suspicious/anomalous domains detected — the long tail of single-hit blocks are standard CA/OCSP/CRL and OS package endpoints, consistent with normal build tooling; no action needed there.
4. Investigate CI Optimization Coach's 534 blocked requests specifically, since it is the single largest source of blocked traffic by workflow.

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🔒 DIFC Integrity Analysis

No DIFC integrity-filtered events found in the last 7 days. Both the restored cache snapshot (updated_at: 2026-08-24T16:12:53Z, total_runs: 0) and the freshly collected /tmp/gh-aw/agent/integrity/filtered-logs.json (total_runs: 0) confirm zero integrity/secrecy filtering activity across all monitored MCP gateway traffic this cycle. No charts were generated for this section since there is no underlying data.

💡 DIFC Tuning Recommendations

1. No tuning changes are indicated this cycle — zero filtered events suggests either a quiet period or that DIFC coverage/policies aren't yet triggering on current MCP server traffic patterns.
2. Continue monitoring; if this zero-event pattern persists across multiple reporting cycles, verify DIFC instrumentation is still active on the relevant MCP servers rather than assuming a clean bill of health.

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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/32748539014

Generated by 🔒 Daily Security Observability Report · copilot · auto · 77.7 AIC · ⌖ 8 AIC · ⊞ 15.4K · ◷

• expires on Aug 27, 2026, 8:38 AM UTC-08:00

[github-actions[bot]]

Smoke test comment - discussion interaction check (test #7).

Warning

Firewall blocked 6 domains

The following domains were blocked by the firewall during workflow execution:

• accounts.google.com
• android.clients.google.com
• clients2.google.com
• contentautofill.googleapis.com
• www.google.com
• www.gstatic.com

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
    - defaults
    - "accounts.google.com"
    - "android.clients.google.com"
    - "clients2.google.com"
    - "contentautofill.googleapis.com"
    - "www.google.com"
    - "www.gstatic.com"

See Network Configuration for more information.

📰 BREAKING: Report filed by Smoke Copilot · copilot · auto · 42.7 AIC · ⌖ 2.21 AIC · ⊞ 9.1K · ◷
_{Comment /smoke-copilot to run again
Add label smoke to run again}

[github-actions[bot]]

This discussion has been marked as outdated by Daily Security Observability Report.

A newer discussion is available at Discussion #55825.