Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Alucard Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Generic Google privacy policy (not scoped to this extension) admits data collection and 3rd-party sharing — maximum privacy pillar score.
• New-tab override + install/uninstall URL hijacks create monetization shell pattern (Webstore +2.0 each).
• No developer name provided; extension has only 117 installs yet overrides new tab for every user.
• DOM-XSS sink (innerHTML from variable) in calendar.js with no CSP in manifest.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html — extension replaces new tab page.
• privacy_policy_generic store Policy URL is myaccount.google.com/privacypolicy — Google's own policy, not scoped to this extension.
• privacy_policy_classification api fetched=true, scope_extension=false, data_collection=true, third_party_sharing=true — D rule applies: +10.0.
• install_uninstall_hijack crx Both onInstalled and onUninstall open gameograf.com URLs with UTM tracking parameters.
• no_developer_name store developer_name is empty string; reputation penalized +1.0.
• dom_xss_sink crx innerHTML assigned from variable in js/calendar.js; csp_present=false amplifies risk.
• verified_publisher store Verified publisher badge present; provides -3.0 reputation discount (floored at 2.0 check not triggered).
• no_csp manifest content_security_policy is null; MV3 has strict default but dom_sink + no explicit CSP raises code quality.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Alucard Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.22 -> 7.72 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/manipulating search queries; medium risk for a NewTab override.
• alarms low Scheduling only; minimal risk.
• storage low Local data persistence; low risk on its own.
• chrome_url_overrides.newtab high Replaces new tab page; captures all new-tab navigations and search intent.
• host_permissions: https://api.gameograf.com/* medium Scoped to dev-owned API domain; narrows surface but enables data exfil to that endpoint.

Pillar Scores

Bookkeeping