Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Tanjiro - Demon Slayer Live Wallpaper [adware] (+2.0, capped).
• NewTab override with uninstall+install URL hijack flags classic ad-monetization shell pattern.
• last_updated is missing/null — maintenance is completely unknown, scored as stale.
• Privacy policy collects data and shares with third parties but lacks retention disclosure.
• External JS hosts include social/AI platforms (instagram, youtube, chatgpt) beyond search function.

Evidence

• newtab_override manifest chrome_url_overrides.newtab = newtab.html; every new tab controlled by extension.
• uninstall_url_hijack crx uninstall_url_hijack=true; Webstore +3.0 applied for numbered/3rd-party uninstall redirect pattern.
• install_url_hijack crx install_url_hijack=true; Webstore +2.0 applied for onInstalled 3rd-party URL open.
• maintenance_unknown store months_since_update=null and last_updated empty; scored at max maintenance risk (10.0).
• privacy_policy_gaps api Policy fetched; scope_extension=true, data_collection=true, third_party_sharing=true, retention=false.
• external_hosts_broad crx JS contacts chatgpt.com, instagram.com, youtube.com, x.com — beyond core search/wallpaper function.
• fan_content_shell store Anime fan-content theme (Demon Slayer) wrapping a NewTab+search monetization extension.
• no_csp manifest content_security_policy=null on MV3; MV3 has strict default so no +2.0 MV2 penalty applied.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Tanjiro - Demon Slayer Live Wallpaper [adware]; score 6.13 -> 8.13 (+2.0 cap 2.5).

Permissions Breakdown

• search medium Allows reading and manipulating search queries; paired with newtab override raises monetization concern.
• chrome_url_overrides.newtab high Replaces every new tab; primary vector for search hijack and ad monetization.

Pillar Scores

Bookkeeping