Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Book of Spells Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override with uninstall/install URL hijack to gameograf.com — monetization shell pattern.
• Search permission combined with newtab override allows full query interception on every new tab.
• No CSP declared (MV3) — DOM-XSS sinks in popup.js and calendar.js are unmitigated.
• Developer name absent; uninstall and install events both redirect to marketing URL.

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=extension&utm_medium=install
• newtab_override manifest chrome_url_overrides.newtab = newtab.html; every new tab replaced by extension.
• no_csp manifest content_security_policy is null; csp_present=false; MV3 default CSP applies but no explicit hardening.
• dom_xss_sinks crx innerHTML assigned from variables in popup.js and calendar.js — DOM-XSS risk without CSP.
• developer_name_missing store developer_name is empty string; no 'Offered by' display name on listing.
• verified_publisher store verified_publisher=true, developer email support@gameograf.com matches policy domain.
• broad_js_external_hosts crx 12 external hosts in JS including calendar.google.com, chat.openai.com, drive.google.com, sheets.google.com.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Book of Spells Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 2.83 -> 5.33 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/overriding search provider; typical for NewTab but enables query interception.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; narrow host access.
• chrome_url_overrides: newtab medium NewTab override replaces every new tab; monetization/tracking surface per rubric rule (a).

Pillar Scores

Bookkeeping