Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Sousou No Frieren Wallpapers [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's generic policy — does not scope to this extension; data_collection and third_party_sharing admitted without extension context.
• NewTab override + search permission = classic search-monetization shell; uninstall and install URL hijacks confirm monetization intent.
• Install/uninstall URL hijacks redirect users to gameograf.com tracking URLs on both install and removal.
• No developer name listed; no operator siblings but mlionltd.github.io is an unvetted external JS host.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to index.html — hijacks every new tab.
• uninstall_url_hijack crx setUninstallURL targets https://gameograf.com/?utm_source=uninstall&utm_medium=link&utm_campaign=bg.
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=install&utm_medium=link&utm_campaign=bg.
• generic_privacy_policy store Privacy URL is Google's own account policy; scope_extension=false, data_collection=true, third_party_sharing=true.
• external_js_host_unvetted crx mlionltd.github.io listed as external JS host — third-party GitHub Pages domain outside dev control.
• no_csp manifest content_security_policy is null; no CSP present on MV3 extension with DOM-XSS sink.
• dom_xss_sink crx popup.js uses innerHTML from variable without sanitization; no CSP mitigates this.
• no_developer_name store developer_name is empty string; reduces accountability despite verified_publisher=true.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Sousou No Frieren Wallpapers [adware] + malext.io malicious_extension_sentry; score 5.38 -> 7.88 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying/modifying search behavior; paired with newtab override raises monetization risk.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.
• chrome_url_overrides.newtab medium Replaces new-tab page; primary monetization vector for this extension type.

Pillar Scores

Bookkeeping