Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Hello Kitty Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's generic policy — does NOT scope to this extension but admits data collection and 3rd-party sharing (+10.0 privacy pillar).
• New-tab override + search permission = classic monetization shell; uninstall/install URL hijack to gameograf.com confirmed.
• Two unguarded innerHTML sinks (popup.js, calendar.js) with no CSP — DOM-XSS risk on every new-tab render.
• No developer name listed; 'Offered by' absent despite verified-publisher badge.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces every new tab with extension-controlled page.
• privacy_policy_generic store Privacy URL points to Google's own policy (myaccount.google.com/privacypolicy); scope_extension=false, data_collection=true, third_party_sharing=true.
• uninstall_url_hijack crx setUninstallURL → gameograf.com with utm tracking params.
• install_url_hijack crx onInstalled opens gameograf.com with utm tracking params.
• dom_xss_sink crx innerHTML assigned from variable in popup.js and calendar.js; no CSP to mitigate.
• no_csp manifest content_security_policy is null; MV3 default applies but innerHTML sinks remain unmitigated at app level.
• no_developer_name store developer_name is empty string; reduces accountability despite verified_publisher=true.
• verified_publisher_featured store verified_publisher=true and is_featured_by_google=true; discounts applied but privacy policy is generic Google policy.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Hello Kitty Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.84 -> 7.34 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows search provider manipulation; combined with newtab override this is a monetization surface.
• 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 monetization vector for this extension category.

Pillar Scores

Bookkeeping