Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — WAPlugin - WhatsApp AI 助手 [data-theft] + malext.io malicious_extension_sentry (+2.5, capped).
• Privacy policy is Google's generic policy — not scoped to this extension; admits data collection and 3rd-party sharing.
• Brand impersonation: uses WhatsApp brand name without confirmed ownership (gmail dev, no verified publisher).
• Free-webmail developer (gmail.com) with no verified business identity or publisher badge.
• AI extension processes WhatsApp page content via content script; data sent to api.waplugin.com (unknown third party).

Evidence

• privacy_policy_generic store Policy URL is Google's own account policy: scope_extension=false, data_collection=true, third_party_sharing=true → +10.0 privacy.
• brand_impersonation store brand_mention.is_impersonation=true for 'whatsapp'; developer domain is gmail.com, confirmed_owner=false.
• free_webmail_developer store Developer email nswbmw1992@gmail.com; not verified publisher, not featured; reputation floor applied at 7.5.
• external_host_api_waplugin crx js_external_hosts includes api.waplugin.com — unknown third-party endpoint receiving WhatsApp session data.
• no_csp manifest content_security_policy is null; MV3 so no v2 +2.0 network penalty, but no CSP hardening present.
• small_install_count store Only 150 installs; install_perm_anomaly flags not triggered but very low adoption increases tail risk.
• no_code_findings crx code_findings_raw=[], obfuscation_score=0.0; 71 JS files scanned with no malicious patterns detected.
• no_cve_findings crx cve_findings_raw=[]; no vulnerable bundled libraries detected.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — WAPlugin - WhatsApp AI 助手 [data-theft] + malext.io malicious_extension_sentry; score 4.09 -> 6.59 (+2.5 cap 2.5).

Permissions Breakdown

• storage low Standard local data persistence; low risk.
• unlimitedStorage low Allows large local storage; minor abuse potential for data hoarding.
• alarms low Background scheduling; low standalone risk.
• tabs medium Can read tab URLs/titles; moderate privacy risk without broader host access.
• https://web.whatsapp.com/* medium Scoped to WhatsApp Web only; can read/modify WhatsApp session and messages.

Pillar Scores

Bookkeeping