Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Kawaii Cute Halloween Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Uninstall URL hijack to gameograf.com — classic monetization/tracking shell pattern.
• Install URL hijack opens 3rd-party URL on install — unsolicited redirect behavior.
• NewTab override with search permission: monetization surface replacing every new tab.
• No CSP declared (MV3); two innerHTML DOM-XSS sinks in popup.js and calendar.js.

Evidence

• uninstall_url_hijack manifest chrome.runtime.setUninstallURL → https://gameograf.com/?utm_source=extension&utm_medium=install
• install_url_hijack manifest onInstalled opens https://gameograf.com/?utm_source=lofi&utm_medium=install
• newtab_override manifest chrome_url_overrides.newtab = newtab.html; search permission also declared.
• csp_absent manifest content_security_policy is null; MV3 default applies but no explicit CSP hardening.
• dom_xss_sinks crx innerHTML user-controlled in js/popup.js and js/calendar.js — XSS risk without CSP.
• verified_publisher store Publisher verified; discount applied but developer_name is empty string.
• privacy_policy api Policy fetched; scope_extension=true, data_collection=true, retention=true, third_party_sharing=true.
• no_siblings_no_bad_hosts api operator_cluster sibling_count=0; bad_host_hits=[], monetization_hits=[], affiliate_hits=[].
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Kawaii Cute Halloween Wallpaper [adware] + malext.io malicious_extension_sentry; score 2.79 -> 5.29 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows search provider interaction; paired with newtab override raises monetization concern.
• chrome_url_overrides.newtab medium Replaces new tab page — primary surface for NewTab monetization shells.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain only.

Pillar Scores

Bookkeeping