Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Christmas room live wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab; combined with uninstall/install URL hijacks creating monetization surface.
• Privacy policy is generic Google policy — scope_extension=false, data_collection=true, third_party_sharing=true → worst-case privacy score.
• Two innerHTML DOM-XSS sinks without CSP protection increase XSS risk on the new tab page.
• No developer name listed; verified publisher status partially offsets but dev name field empty.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — every new tab controlled by extension.
• uninstall_url_hijack crx setUninstallURL targets https://gameograf.com/?utm_source=gameograf&utm_medium=link&utm_campaign=bg
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=install&utm_medium=link&utm_campaign=bg
• privacy_policy_generic api Policy URL is Google's own privacy page; scope_extension=false, data_collection=true, third_party_sharing=true.
• dom_xss_sink crx innerHTML assigned from variable in popup.js and calendar.js; no CSP present.
• no_csp manifest content_security_policy is null; MV3 defaults apply but no explicit hardening.
• verified_publisher store Developer has verified publisher badge; domain resolves; not throwaway.
• no_developer_name store developer_name field is empty string despite verified publisher status.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Christmas room live wallpaper [adware] + malext.io malicious_extension_sentry; score 5.14 -> 7.64 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Grants ability to interact with browser search; relevant for NewTab override context.
• chrome_url_overrides.newtab high Replaces every new tab with extension page — high reach, monetization vector.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; limited reach.

Pillar Scores

Bookkeeping