Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Madoka Magica Magia Exedra Wallpaper Gameograf [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's generic policy — not scoped to this extension; admits data collection and 3rd-party sharing (D clause → +10.0).
• Uninstall URL hijack redirects to gameograf.com UTM link; install URL hijack also present — monetization shell pattern.
• New-tab override with search permission enables persistent ad/search monetization on every new tab.
• Stale 15 months with newtab override and no CSP — verified-publisher discount capped at -1.0 per invariant 0c (months_since_update > 18 not met, but >12 maintenance penalty applies).

Evidence

• privacy_policy_generic_google store Policy URL is Google's own privacy page; scope_extension=false, data_collection=true, third_party_sharing=true → Privacy pillar +10.0 (v3.5 D).
• uninstall_url_hijack crx chrome.runtime.setUninstallURL to gameograf.com UTM link → Webstore +3.0.
• install_url_hijack crx onInstalled opens gameograf.com UTM link → Webstore +2.0.
• newtab_override manifest chrome_url_overrides.newtab set to index.html with search permission → Webstore +2.0 newtab-override monetization.
• verified_publisher store Verified publisher badge present; discount applied but capped at -1.0 per 0c (months_since_update=15 < 18, but policy is generic Google).
• no_developer_name store developer_name is empty string → Reputation +1.0.
• maintenance_6_12mo store months_since_update=15 → maintenance bucket 12-24 months → +6.0.
• dom_xss_no_csp crx innerHTML sink in popup.js with csp_present=false → Code Quality dom_sink condition met → +2.0.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Madoka Magica Magia Exedra Wallpaper Gameograf [adware] + malext.io malicious_extension_sentry; score 5.34 -> 7.84 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/modifying search provider behavior; pairs with newtab override.
• host_permissions: https://api.gameograf.com/* low Scoped to dev-controlled API domain only.
• chrome_url_overrides.newtab medium Replaces new-tab page; monetization vector and persistent reach on every new tab.

Pillar Scores

Bookkeeping