Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Brawl Stars Live Wallpaper Gameograf [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's own generic policy — not scoped to this extension; admits data collection and third-party sharing (Privacy=10).
• New-tab override replaces every new tab for 628 users; paired with uninstall/install URL hijacks to gameograf.com for monetization tracking.
• Uninstall and install URL hijacks fire to developer domain with UTM tracking parameters on every install/uninstall event.
• No developer name listed; verified publisher badge reduces but does not eliminate identity ambiguity.

Evidence

• newtab_override manifest chrome_url_overrides.newtab=newtab.html — replaces every new tab; primary monetization surface.
• uninstall_url_hijack crx setUninstallURL → https://gameograf.com/?utm_source=gameograf&utm_medium=link&utm_campaign=bg&utm_content=uninstall
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=install&utm_medium=link&utm_campaign=bg&utm_content=install
• privacy_policy_generic api Policy URL is Google's own account privacy policy; scope_extension=false, data_collection=true, third_party_sharing=true.
• dom_xss_sink crx innerHTML assignment in popup.js and calendar.js with no CSP; DOM-XSS risk if API data is tainted.
• no_developer_name store developer_name is empty string; verified_publisher=true but no display name reduces accountability.
• verified_publisher store Extension carries verified publisher badge for gameograf.com which resolves and is not throwaway.
• csp_absent manifest content_security_policy is null; MV3 default CSP applies but no explicit restriction on connect-src.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Brawl Stars Live Wallpaper Gameograf [adware] + malext.io malicious_extension_sentry; score 5.14 -> 7.64 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying the browser's search engine; paired with newtab override creates a search monetization surface.
• chrome_url_overrides.newtab high Replaces every new-tab page; high-reach monetization/tracking surface for all users.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.

Pillar Scores

Bookkeeping