Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Steam Logo RGB Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override replaces every new tab — high-reach monetization surface with search interception via 'search' permission.
• Brand impersonation: 'Steam' mentioned in title/name but developer (gameograf.com) is not Valve and not confirmed owner.
• Uninstall and install URL hijacks redirect to gameograf.com utm-tagged URLs — classic traffic-monetization pattern.
• Two DOM-XSS sinks (innerHTML from variable) with no CSP present — amplified risk under v3 FIX B.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces new tab for all users.
• brand_impersonation store brand_mention.is_impersonation=true; 'Steam' in title but gameograf.com is not Valve/Steam.
• install_uninstall_url_hijack crx Both install and uninstall hooks redirect to gameograf.com with UTM tracking params.
• dom_xss_no_csp crx Two innerHTML-from-variable sinks in popup.js and calendar.js; csp_present=false amplifies risk.
• no_developer_name store developer_name is empty string; verified_publisher=true partially mitigates but identity gap remains.
• search_permission_newtab_combo manifest 'search' permission + newtab override enables search interception on every new tab.
• verified_publisher store verified_publisher=true; domain resolves, not throwaway — partial reputation credit applied.
• privacy_policy_adequate api Policy fetched; scope_extension=true, data_collection=true, retention=true, third_party_sharing=true.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Steam Logo RGB Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.22 -> 6.72 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying browser search; medium risk on its own but combined with newtab override raises concern.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.
• chrome_url_overrides: newtab high Replaces every new tab — high-reach monetization surface, intercepts default search behavior.

Pillar Scores

Bookkeeping