Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Street Traffic Cars Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override with install/uninstall URL hijack tracking — monetization shell pattern.
• No CSP declared (MV3 extension); innerHTML sinks in popup.js and calendar.js elevate DOM-XSS risk.
• Developer name missing; no display name in store listing.
• Search permission combined with newtab override enables silent search-provider replacement.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces every new-tab page.
• uninstall_url_hijack crx setUninstallURL targets 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
• no_csp manifest content_security_policy is null; no CSP protection despite innerHTML sinks in JS.
• dom_xss_sinks crx innerHTML assigned from variables in popup.js and calendar.js without CSP guard.
• developer_name_missing store developer_name is empty string; no display identity beyond email domain.
• privacy_policy_adequate api Policy fetched; scope_extension=true, data_collection=true, retention=true, third_party_sharing=true.
• maintenance_stale store months_since_update=12; falls in 6-12 month band (+3.5).
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Street Traffic Cars Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.10 -> 6.60 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows overriding search provider; medium risk for a NewTab extension.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.
• chrome_url_overrides.newtab medium Replaces new-tab page; primary vector for monetization and search interception.

Pillar Scores

Bookkeeping