Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Black Myth: Wukong Wallpapers by Gameograf [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override with uninstall/install URL hijack to gameograf.com — monetization shell pattern.
• Privacy policy is Google's generic policy — not scoped to this extension; admits data collection and 3rd-party sharing.
• No CSP declared (MV3 default applies but null csp_present flag); innerHTML DOM-XSS sink in popup.js.
• No developer name listed; reduced accountability for a newtab override extension.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = index.html; replaces every new tab for 703 users.
• uninstall_url_hijack crx setUninstallURL to https://gameograf.com/?utm_source=uninstall — 3rd-party monetization.
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=install — traffic monetization on install.
• generic_privacy_policy api Policy URL is Google account policy; scope_extension=false, data_collection=true, third_party_sharing=true.
• dom_xss_sink crx innerHTML written from variable in js/popup.js with no CSP guard — DOM-XSS risk.
• no_developer_name store developer_name is empty string; reduced accountability for newtab override.
• external_host_mlionltd_github_io crx js_external_hosts includes mlionltd.github.io — non-dev-controlled GitHub Pages host.
• verified_publisher store verified_publisher=true; partial reputation credit but capped due to monetization signals.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Black Myth: Wukong Wallpapers by Gameograf [adware] + malext.io malicious_extension_sentry; score 5.28 -> 7.78 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Search provider override capability; medium risk for search hijack.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.
• chrome_url_overrides: newtab high NewTab override replaces every new tab; high monetization/tracking surface.

Pillar Scores

Bookkeeping