Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Mountain Waterfall Sunset Fantasy Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Newtab override + uninstall/install URL hijack to owhit.com — classic monetization shell pattern.
• Privacy policy is Google's own generic policy, not scoped to this extension; data_collection+third_party_sharing admitted without extension context → +10.0 privacy.
• Free-webmail dev (kaansefa83@gmail.com) with no verified business; elevated developer trust risk.
• JS external hosts include major platforms (YouTube, Netflix, Instagram, x.com) contacted by a wallpaper extension — scope mismatch.

Evidence

• uninstall_url_hijack crx chrome.runtime.setUninstallURL → https://owhit.com/uninstall; 3rd-party redirect on uninstall.
• install_url_hijack crx onInstalled opens https://owhit.com/mountain-waterfall-sunset-fantasy-live-wallpaper; 3rd-party URL hijack.
• newtab_override manifest chrome_url_overrides.newtab = index.html; every new tab controlled by extension.
• privacy_policy_generic store Policy URL is Google's account privacy page; scope_extension=false, data_collection=true, third_party_sharing=true.
• free_webmail_developer store Developer email kaansefa83@gmail.com; no verified business domain; no publisher badge.
• js_external_hosts_mismatch crx Wallpaper extension contacts Netflix, Instagram, YouTube, x.com, chat.openai.com — unrelated to stated function.
• no_csp manifest content_security_policy is null on MV3 extension; no explicit CSP declared.
• new_tab_monetization_pattern store NewTab + search permission + install/uninstall URL hijack to owhit.com = traffic-monetization shell fingerprint.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Mountain Waterfall Sunset Fantasy Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 5.36 -> 7.86 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Grants ability to interact with Chrome search functionality; combined with newtab override elevates risk.
• chrome_url_overrides.newtab high Replaces every new tab with extension-controlled page; prime monetization surface.

Pillar Scores

Bookkeeping