Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — ЯнтарьVPN — Защита данных в янтаре [browser-hijack] + malext.io malicious_extension_sentry (+2.5, capped).
• proxy permission routes ALL browser traffic through osavpn.su (Russia), enabling full MITM on user traffic
• Privacy policy is Google's generic policy — entirely unscoped to this extension; admits data collection and 3rd-party sharing
• Free-webmail dev (gmail), no developer name, no verified publisher — zero accountability
• Only 16 installs with HIGH-tier proxy permission — classic tail-attack-surface fingerprint

Evidence

• proxy_permission manifest proxy declared — full traffic interception capability; all browser requests routed through osavpn.su
• external_js_host crx js_external_hosts: [osavpn.su] — single RU-hosted domain, no bad-host hit but opaque infrastructure
• privacy_policy_generic store Policy URL is Google's own account policy; scope_extension=false, data_collection=true, third_party_sharing=true
• developer_identity store developer_name empty, free-webmail gmail address, no verified publisher, no featured badge
• small_install_high_perm api install_perm_anomaly: 16 installs + proxy (HIGH tier) — small_install_high_perm=true
• no_csp manifest content_security_policy is null; MV3 strict default applies but no explicit policy declared
• geo_diversity crx All JS hosted in RU (1 country); consistent with osavpn.su Russian infrastructure
• maintenance_ok store Last updated April 9, 2026; months_since_update=5 — 3-6 month band (+1.5)
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — ЯнтарьVPN — Защита данных в янтаре [browser-hijack] + malext.io malicious_extension_sentry; score 5.55 -> 8.05 (+2.5 cap 2.5).

Permissions Breakdown

• proxy high Routes all browser traffic through attacker-controlled server; full network interception capability.

Pillar Scores

Bookkeeping