Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — WA Media Saver [data-theft] + malext.io malicious_extension_sentry (+2.5, capped).
• Gmail dev email with no verified business identity (free-webmail developer).
• Access to web.whatsapp.com with scripting: can read WhatsApp messages and media.
• Privacy policy admits third_party_sharing but scope is limited; retention not disclosed.
• MV3 + no CSP — mild code injection risk mitigated by narrow host scope.

Evidence

• developer_email_free_webmail store webservice2t@gmail.com — free webmail, no verified business; +1.5 Reputation.
• host_permission_whatsapp manifest https://web.whatsapp.com/* — access to WhatsApp Web; scripting + downloads combo.
• privacy_policy_third_party_sharing api Policy fetched, scoped, but third_party_sharing=true and retention=false; +1.0 Privacy.
• no_cve_findings crx cve_findings_raw empty; CVE pillar = 0.0.
• code_findings_clean crx code_findings_raw empty, obfuscation_score=0.0; Code Quality = 0.0.
• operator_cluster_singleton api sibling_count=0; no operator cluster penalty.
• justified_broad_discount manifest MediaDownloader category; host access to WhatsApp Web matches stated function; -1.5 Permissions.
• install_count_tiny store Only 148 installs; no install-count boost applied.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — WA Media Saver [data-theft] + malext.io malicious_extension_sentry; score 2.58 -> 5.08 (+2.5 cap 2.5).

Permissions Breakdown

• downloads medium Can save files to disk; expected for media downloader but still a capability risk.
• activeTab low Access to current tab on user action only; limited scope.
• scripting medium Can inject scripts into pages; scoped to web.whatsapp.com only.
• https://web.whatsapp.com/* medium Full access to WhatsApp Web including messages and media; sensitive but narrowly scoped.

Pillar Scores

Bookkeeping