Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — My Neighbor Totoro Christmas Lights Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Uninstall URL hijack to owhit.com and install URL hijack — classic monetization-shell fingerprint.
• Privacy policy is Google's generic account policy: admits data collection + 3rd-party sharing, not scoped to this extension → +10.0 privacy.
• NewTab override with 8 external JS hosts (Netflix, YouTube, Instagram, X, OpenAI, owhit.com) far beyond stated wallpaper function.
• Free-webmail dev (cenk4790@gmail.com), no verified publisher, no business domain — unaccountable developer.

Evidence

• uninstall_url_hijack manifest chrome.runtime.setUninstallURL targets https://owhit.com/uninstall — 3rd-party operator tracking.
• install_url_hijack manifest onInstalled opens https://owhit.com/my-neighbor-totoro-christmas-lights-live-wallpaper — 3rd-party redirect.
• newtab_override manifest chrome_url_overrides.newtab = index.html; extension controls every new-tab page.
• generic_privacy_policy store Policy is Google account policy: scope_extension=false, data_collection=true, third_party_sharing=true.
• free_webmail_dev store Developer email cenk4790@gmail.com; no verified publisher badge; no business domain.
• excessive_external_hosts crx 8 external JS hosts including owhit.com, Instagram, Netflix, X, OpenAI — unrelated to a wallpaper.
• new_tab_monetization_shape manifest NewTab override + search permission + install/uninstall hijack = monetization-shell pattern.
• no_csp manifest content_security_policy is null; MV3 provides defaults but no explicit hardening.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — My Neighbor Totoro Christmas Lights Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.36 -> 7.86 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows reading/overriding search queries; medium risk on its own.
• chrome_url_overrides.newtab high Replaces new-tab page — prime real estate for monetization/redirect abuse.

Pillar Scores

Bookkeeping