Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Manchester City Wallpapers [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• NewTab override with install/uninstall URL hijack — classic monetization shell pattern.
• Affiliate-link cloaking via bit.ly in js_external_hosts — obfuscates redirect destination.
• Developer name missing; no recognized-org discount; low install base (1,000).
• months_since_update=16 puts extension in 12-24mo stale band (+6.0 maintenance).

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to index.html — replaces every new-tab page.
• uninstall_url_hijack crx setUninstallURL targets gameograf.com with utm tracking params.
• install_url_hijack crx onInstalled opens gameograf.com with utm tracking params.
• affiliate_hit api bit.ly in js_external_hosts flagged as affiliate/cloaking short-link redirector.
• dom_xss_sink crx popup.js innerHTML assignment from variable; no CSP present to mitigate DOM-XSS.
• no_csp manifest content_security_policy is null; MV3 default CSP applies but no explicit hardening.
• developer_name_missing store developer_name is empty string; verified_publisher=true but name not surfaced.
• stale_extension store months_since_update=16, in 12-24mo band; fan-content NewTab with monetization signals.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Manchester City Wallpapers [adware] + malext.io malicious_extension_sentry; score 4.25 -> 6.75 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows overriding search provider — medium risk on its own, higher in NewTab context.
• host_permission: https://api.gameograf.com/* low Scoped to developer-controlled API domain only.
• chrome_url_overrides.newtab medium Replaces new-tab page — primary monetization surface for this extension type.

Pillar Scores

Bookkeeping