Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — DarkSpectre ShadyPanda expansion / Zoom Stealer (name unconfirmed) [click-fraud] + malext.io malicious_extension_sentry (+2.5, capped).
• Extension abandoned 51 months ago (>36mo stale, MV2, no CSP) — maximum maintenance risk.
• Privacy policy is generic Google account policy: admits data collection + 3rd-party sharing without extension scope.
• Brand impersonation: mentions 'github' but developer is unaffiliated gmail user.
• No CSP + MV2 + innerHTML sinks in both content_script and vendor.js — XSS surface unmitigated.

Evidence

• maintenance_stale store Last updated May 2022; 51 months stale — >36mo bracket scores 10.0 on maintenance pillar.
• privacy_generic_google_policy crx Privacy URL is Google account policy (scope_extension=false, data_collection=true, third_party_sharing=true) — scores 10.0.
• brand_impersonation store brand_mention.is_impersonation=true for 'github'; developer is gmail, confirmed_owner=false.
• no_csp_mv2 manifest MV2 + csp_present=false: +2.0 Network per v2 calibration; DOM sinks unmitigated.
• dom_sink_innerhtml crx Two innerHTML sinks (content_script.js, vendor.js) with no CSP and no eval — each scores +2.0 under FIX B.
• small_install_high_perm store install_perm_anomaly: 10 installs, HIGH-tier webRequest + broad host permission — tail attack surface flag.
• external_js_hosts crx 6 external JS hosts: heroku, vercel, github, reactjs.org, laobi.icu; 2 countries (HK, US).
• free_webmail_dev store Developer email moonrailgun@gmail.com; no verified publisher, no business website — Reputation floor 7.5.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — DarkSpectre ShadyPanda expansion / Zoom Stealer (name unconfirmed) [click-fraud] + malext.io malicious_extension_sentry; score 6.74 -> 9.24 (+2.5 cap 2.5).

Permissions Breakdown

• https://*.github.com/* high Broad host access to all github.com subdomains; enables content script injection and data read.
• webRequest high Can observe all network requests to github.com; combined with host access amplifies risk.
• content_scripts: https://github.com/* medium Injects JS into github.com pages; consistent with stated function but elevates DOM attack surface.

Pillar Scores

Bookkeeping