Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Mitsuri Kanroji - Demon Slayer 4K Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's own policy — not scoped to this extension, admits data collection and third-party sharing (Privacy +10).
• NewTab override with uninstall and install URL hijacks to gameograf.com monetization endpoints.
• Stale 16 months; v3.5(E) caps verified-publisher discount due to months_since_update > 18 threshold proximity and generic policy.
• innerHTML DOM-XSS sink in popup.js with no CSP present (MV3 default applies, no explicit CSP).

Evidence

• uninstall_url_hijack manifest chrome.runtime.setUninstallURL → gameograf.com UTM monetization endpoint (+3.0 Webstore).
• install_url_hijack manifest onInstalled opens gameograf.com UTM install endpoint (+2.0 Webstore).
• newtab_override manifest chrome_url_overrides.newtab = newtab.html — monetization shell NewTab pattern (+2.0 Webstore).
• privacy_policy_generic store Policy URL is Google's own policy; scope_extension=false, data_collection=true, third_party_sharing=true → +10.0 Privacy (rule D).
• verified_publisher_cap store Verified publisher but months_since_update=16 and generic policy; invariant 0c caps discount at -1.0, applied to Reputation.
• dom_sink_innerhtml crx popup.js innerHTML sink without CSP; no csp_present → elevated to +2.0 Code Quality per FIX B.
• maintenance_stale store 16 months since update → 6-12mo band = +3.5 Maintenance; not yet zombie tier.
• no_developer_name store developer_name is empty string; +1.0 Reputation for no 'Offered by' name.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Mitsuri Kanroji - Demon Slayer 4K Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.22 -> 7.72 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows manipulating search provider behavior; typical for NewTab monetization.
• host_permissions: https://api.gameograf.com/* low Scoped to own API domain; limited surface but enables data exfil to dev.
• chrome_url_overrides.newtab medium Replaces new tab page — primary monetization surface for this category.

Pillar Scores

Bookkeeping