Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Berserk Ultimate Demon Slayer Gameograf [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy URL returns fetch error — treated as no policy; data handling completely unknown.
• Uninstall and install URL hijack both active — classic traffic-monetization shell pattern.
• NewTab override with search permission enables monetization of every new-tab search.
• Two innerHTML-from-variable DOM-XSS sinks with no CSP to mitigate injection risk.

Evidence

• privacy_policy_fetch_error api Privacy policy URL 404/error at fetch time; classified as fetched=false → +10.0 privacy.
• uninstall_url_hijack crx chrome.runtime.setUninstallURL points to gameograf.com UTM link → +3.0 webstore.
• install_url_hijack crx onInstalled opens gameograf.com UTM install link → +2.0 webstore.
• newtab_override manifest chrome_url_overrides.newtab set; combined with search permission, monetization surface.
• dom_sink_innerhtml_userctrl crx Two innerHTML XSS sinks in popup.js and calendar.js; no CSP present to block injection.
• no_csp manifest content_security_policy is null; csp_present=false on MV3 extension with DOM sinks.
• verified_publisher store Verified publisher badge present; caps reputation discount but doesn't resolve privacy gap.
• maintenance_6_12mo store Last updated October 2025; 11 months since update → +3.5 maintenance.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Berserk Ultimate Demon Slayer Gameograf [adware] + malext.io malicious_extension_sentry; score 4.93 -> 7.43 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading and overriding search provider; medium risk for NewTab/search monetization.
• host_permission: https://api.gameograf.com/* low Scoped to developer-owned API domain only; low blast radius.
• chrome_url_overrides.newtab medium Replaces new-tab page; primary monetization surface for this category.

Pillar Scores

Bookkeeping