Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Hello Kitty Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Uninstall URL hijack to owhit.com (+3.0 webstore) and install URL hijack (+2.0 webstore) — classic monetization shell pattern.
• Privacy policy is Google's generic account policy (scope_extension=false, data_collection=true, third_party_sharing=true) → Privacy pillar 10.0.
• NewTab override with 'search' permission and no developer name; free-webmail gmail dev with no business website.
• JS external hosts include chatgpt.com, instagram.com, netflix.com, youtube.com, x.com — far beyond stated wallpaper function.

Evidence

• uninstall_url_hijack crx chrome.runtime.setUninstallURL → https://owhit.com/uninstall (3rd-party monetization domain).
• install_url_hijack crx onInstalled opens https://owhit.com/hello-kitty-wallpaper — 3rd-party redirect on install.
• newtab_override manifest chrome_url_overrides.newtab = index.html; every new tab redirected through extension.
• privacy_policy_generic store Policy URL is Google account privacy page; scope_extension=false, data_collection=true, third_party_sharing=true.
• free_webmail_no_dev_name store Developer email tekbatuhan64@gmail.com; developer_name empty; no business website verifiable.
• js_external_hosts_mismatch crx 8 external JS hosts including instagram.com, netflix.com, x.com — unrelated to wallpaper/newtab function.
• verified_publisher store Verified publisher badge present but does not scope privacy policy; policy is Google's generic account policy.
• csp_absent manifest content_security_policy null / csp_present=false on MV3 extension with external JS hosts.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Hello Kitty Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.45 -> 7.95 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/overriding search provider; paired with newtab override amplifies monetization risk.
• chrome_url_overrides.newtab medium Replaces every new tab with extension page; core mechanism for ad-monetization shells.

Pillar Scores

Bookkeeping