Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Invincible Sky Flight Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override hijacks every new tab; uninstall+install URL both redirect to owhit.com (3rd-party monetization domain).
• Privacy policy is Google's own generic policy — does not scope to this extension at all; treated as worst-case disclosure.
• Developer name is just the email address (info@walltab.com); no verified publisher or featured badge.
• No CSP declared (MV3 default applies but no explicit hardening); js_external_hosts include 8 major sites injected into NewTab.

Evidence

• uninstall_url_hijack crx chrome.runtime.setUninstallURL → https://owhit.com/uninstall (3rd-party domain, monetization shell indicator).
• install_url_hijack crx onInstalled opens https://owhit.com/invincible-sky-flight-live-wallpaper/ (3rd-party redirect on install).
• newtab_override manifest chrome_url_overrides.newtab = index.html; every new tab controlled by extension.
• generic_privacy_policy store Privacy URL is Google's own account policy; scope_extension=false, data_collection=true, third_party_sharing=true.
• no_verified_publisher store Developer listed only as email info@walltab.com; no verified publisher or featured badge.
• js_external_hosts crx 8 external hosts embedded in NewTab page incl. owhit.com, chat.openai.com, social/streaming sites.
• no_csp manifest content_security_policy is null; csp_present=false on MV3 extension.
• low_installs_newtab_shell store Only 354 installs; NewTab shell with uninstall/install hijack pattern typical of traffic-monetization cluster.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Invincible Sky Flight Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.88 -> 7.38 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows overriding or querying search; medium risk in context of NewTab override.
• chrome_url_overrides.newtab medium Replaces every new tab with extension page; high monetization/redirect surface.

Pillar Scores

Bookkeeping