Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Oshi No Ko Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Uninstall URL hijack to owhit.com and install URL hijack — classic monetization/tracking shell pattern.
• Privacy policy is Google's generic account policy; scope_extension=false, admits data collection and 3rd-party sharing — scores +10.
• NewTab override with search permission: ad-monetization surface on every new tab.
• Free-webmail developer (gmail) with no business domain; no verified publisher; throwaway-identity signals.

Evidence

• uninstall_url_hijack manifest chrome.runtime.setUninstallURL → https://owhit.com/uninstall (3rd-party tracking on uninstall).
• install_url_hijack manifest onInstalled opens https://owhit.com/oshi-no-ko-wallpaper (3rd-party redirect on install).
• privacy_policy_generic store Policy URL is Google account policy; scope_extension=false, data_collection=true, third_party_sharing=true.
• newtab_override manifest chrome_url_overrides.newtab = index.html; paired with search permission — ad monetization pattern.
• free_webmail_dev store Developer email gokturksener476@gmail.com; no business domain; unverified publisher.
• js_external_hosts crx 8 external hosts including owhit.com, chatgpt.com, instagram.com, netflix.com, youtube.com, x.com.
• search_permission_newtab manifest search + newtab override combo typical of search-monetization NewTab shells.
• no_csp manifest content_security_policy is null; csp_present=false on MV3 extension with external host references.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Oshi No Ko Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.58 -> 8.08 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows overriding search provider; paired with newtab override creates monetization surface.
• chrome_url_overrides.newtab medium Replaces every new tab page; primary delivery mechanism for this extension's content.

Pillar Scores

Bookkeeping