Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Winter Is Coming Game of Thrones Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy URL unreachable (fetch error) — effective absence of disclosed data handling.
• Uninstall and install URL hijacks redirect to gameograf.com tracking endpoints.
• NewTab override with 'search' permission — canonical ad/search monetization surface.
• Two innerHTML DOM-XSS sinks with no CSP; content from api.gameograf.com could be injected.

Evidence

• privacy_policy_fetch_failed api privacy_policy_classification.fetched==false; HTTPError on https://gameograf.com/privacy-policy/ — treated as no policy.
• uninstall_url_hijack crx chrome.runtime.setUninstallURL points to https://gameograf.com/?utm_source=gameograf&utm_medium=link&utm_campaign=bg&utm_content=uninstall
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=install&utm_medium=link&utm_campaign=bg&utm_content=install
• newtab_override manifest chrome_url_overrides.newtab=newtab.html combined with 'search' permission — high-reach monetization shape.
• csp_absent manifest content_security_policy is null; MV3 provides some default but no explicit extension policy tightening.
• dom_xss_sinks crx innerHTML assignments from variables in popup.js and calendar.js with no CSP — DOM-XSS risk.
• verified_publisher store verified_publisher=true; domain gameograf.com resolves, age ~5.6yr, 265 certs — genuine operator.
• no_developer_name store developer_name is empty string — governance gap despite verified publisher badge.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Winter Is Coming Game of Thrones Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.90 -> 7.40 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying browser search providers; combined with newtab override raises monetization concern.
• host_permissions: https://api.gameograf.com/* medium Scoped to dev API; enables data exfil to own backend with no CSP guard.
• chrome_url_overrides.newtab medium Replaces every new tab — high reach, monetization surface, canonical ad-injection vector.

Pillar Scores

Bookkeeping