Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Supercar Porsche 911 Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's generic policy — does NOT scope to this extension; admits data collection and 3rd-party sharing.
• NewTab override + install/uninstall URL hijack to gameograf.com — classic monetization shell pattern.
• Uninstall URL hijack to 3rd-party tracking endpoint (utm_campaign=bg&utm_content=uninstall).
• No developer name listed; no-CSP MV3 with innerHTML sinks raises DOM-XSS exposure.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — full new-tab page replacement.
• uninstall_url_hijack crx setUninstallURL → https://gameograf.com/?utm_source=gameograf&utm_campaign=bg&utm_content=uninstall
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=install&utm_campaign=bg&utm_content=install
• generic_privacy_policy api Privacy URL is Google's own account policy; scope_extension=false, data_collection=true, third_party_sharing=true.
• dom_xss_sink crx innerHTML assigned from variable in popup.js and calendar.js with no CSP — DOM-XSS risk.
• no_developer_name store developer_name field is empty; reduces accountability.
• verified_publisher store Extension has verified_publisher=true; partially mitigates reputation risk.
• no_csp manifest content_security_policy is null; MV3 default CSP applies but no explicit hardening declared.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Supercar Porsche 911 Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.29 -> 7.79 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying browser search API; relevant to NewTab/search-override pattern.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; low breadth.
• chrome_url_overrides.newtab medium Replaces new-tab page — primary monetization surface for this category.

Pillar Scores

Bookkeeping