Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Cristiano Ronaldo Manchester United 2003–2009 Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override with search permission creates persistent search-monetization surface on every new tab.
• Uninstall and install URL hijack to gameograf.com — confirmed monetization tracking pattern.
• bit.ly affiliate/cloaking hit in js_external_hosts; redirect destination opaque.
• mlionltd.github.io as external JS host is a throwaway/CDN surface without verified ownership.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to index.html — replaces every new tab with extension page.
• uninstall_url_hijack crx setUninstallURL targets gameograf.com with UTM tracking params — monetization shell signal.
• install_url_hijack crx onInstalled opens gameograf.com with UTM install params — monetization shell signal.
• affiliate_hit_bitly crx bit.ly in js_external_hosts flagged as affiliate/cloaking redirector.
• external_host_github_io crx mlionltd.github.io is an unverified GitHub Pages host serving JS — supply-chain risk.
• dom_xss_sink crx innerHTML assigned from variable in popup.js; no CSP present to mitigate DOM-XSS.
• no_csp manifest content_security_policy is null; MV3 default applies but no explicit hardening.
• months_since_update_15 store Last updated 15 months ago — stale, falls in 12–24mo band (+6.0 maintenance).
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Cristiano Ronaldo Manchester United 2003–2009 Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.37 -> 6.87 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying the browser's search engine; pairs with NewTab override to intercept searches.
• host_permission: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.
• chrome_url_overrides.newtab medium Replaces new-tab page; persistent monetization surface on every new tab.

Pillar Scores

Bookkeeping