Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Cat and Dog Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• New-tab override enables monetization/search hijack surface for a wallpaper extension.
• Privacy policy is Google's generic policy — not scoped to this extension, yet admits data collection and third-party sharing.
• Uninstall and install URL hijacks redirect to developer domain with UTM tracking on every install/remove.
• Two innerHTML DOM-XSS sinks found with no CSP present to mitigate injection risk.

Evidence

• newtab_override manifest chrome_url_overrides.newtab='newtab.html'; wallpaper extension overrides every new tab — search/monetization risk.
• 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
• generic_privacy_policy api Policy URL is Google's own privacy page; scope_extension=false, data_collection=true, third_party_sharing=true.
• dom_xss_sink crx innerHTML sinks in popup.js and calendar.js with no CSP — DOM-XSS risk.
• no_developer_name store developer_name is empty string; verified_publisher=true partially offsets but accountability gap remains.
• no_csp manifest content_security_policy is null on MV3 extension; default MV3 CSP applies but no explicit hardening.
• verified_publisher store verified_publisher=true; domain resolves, not throwaway — partial reputation credit applied.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Cat and Dog Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.16 -> 7.66 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying browser search engine; paired with newtab override elevates risk.
• chrome_url_overrides.newtab high Replaces every new tab — prime monetization surface; wallpaper category mismatch.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.

Pillar Scores

Bookkeeping