Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Mouse in the Hammock Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab + uninstall/install URL hijack to gameograf.com tracking URLs.
• innerHTML sinks in popup.js and calendar.js with no CSP (MV3 default only) — DOM-XSS surface.
• Unverified small publisher (8 installs) with no Google verification; lightweight accountability.
• Extension contacts 12 external JS hosts including OpenAI and multiple Google services beyond stated function.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces every new tab page.
• uninstall_url_hijack crx setUninstallURL → https://gameograf.com/?utm_source=extension&utm_medium=install
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=extension&utm_medium=install
• dom_sink_innerhtml_userctrl crx Two innerHTML-from-variable sinks in popup.js and calendar.js; no CSP declared.
• js_external_hosts crx 12 external hosts including chat.openai.com, mail.google.com, docs.google.com — broad reach.
• no_csp manifest content_security_policy is null; MV3 default applies but inline sinks still present.
• privacy_policy api Policy fetched; scope_extension=true, data_collection=true, retention=true, third_party_sharing=true.
• low_installs store Only 8 installs; unverified publisher, no ratings — low accountability surface.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Mouse in the Hammock Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 2.77 -> 5.27 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Can read search queries and interact with search provider; medium risk for a NewTab override.
• host_permissions: https://api.gameograf.com/* medium Scoped to developer's own API domain; necessary for wallpaper/config fetching but is an outbound data endpoint.
• chrome_url_overrides.newtab medium Replaces every new tab; high reach, captures user browsing cadence and search intent.

Pillar Scores

Bookkeeping