MI CIERRO
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Risk Score
5.30
Risk Level:
Medium
Recommendation:
🟡 MEDIUM RISK — review
Top Risks
- Privacy policy is Google's generic policy — not scoped to this extension, admits data collection and third-party sharing.
- Uninstall and install URL hijacks detected; install redirects to web.whatsapp.com but pattern is abuse-associated.
- WhatsApp impersonation: brand_mention.is_impersonation=true; developer domain extensao.store not affiliated with Meta.
- 10+ distinct external JS hosts (wascript.com.br, watools.com.br) contacted; broad backend surface for a 126-install CRM.
- function_constructor (new Function) found in scanned JS; no CSP present on MV3 extension.
Evidence
- uninstall_url_hijack + install_url_hijack manifest Both onInstalled and uninstall URL hooks active; install redirects to web.whatsapp.com — monetization/tracking pattern.
- privacy_policy_generic store Policy URL is myaccount.google.com/privacypolicy — Google's own policy, not scoped to MI CIERRO; data_collection+third_party_sharing=true.
- brand_impersonation store brand_mention.is_impersonation=true for 'whatsapp'; developer extensao.store is not confirmed Meta owner.
- js_external_hosts_count crx 12 external JS host entries, 10 distinct wascript.com.br/watools.com.br subdomains — large backend surface for 126 installs.
- function_constructor crx new Function() in v_7_4_3_80_...193.js; combined with no CSP raises code execution risk.
- dom_sink_innerhtml_userctrl crx innerHTML assigned from variable in content script on WhatsApp Web — DOM-XSS sink; no CSP to mitigate.
- no_csp_mv3 manifest content_security_policy is null; MV3 default applies but no explicit hardening despite dynamic code usage.
- low_install_count store Only 126 installs; combined with impersonation and hijack flags suggests early-stage or niche distribution.
Permissions Breakdown
- unlimitedStorage low Local storage expansion; low direct risk.
- storage low Standard local key-value storage.
- alarms low Scheduling; low risk on its own.
- tabs medium Can read tab URLs and titles across all open tabs.
- https://web.whatsapp.com/* (host) medium Full DOM access on WhatsApp Web; can read messages and session data.
Pillar Scores
Permissions2.30
Reputation7.50
Network4.50
Webstore7.00
Maintenance0.00
Privacy10.00
Code Quality3.50
CVE Exposure0.00
Bookkeeping
Rubric v3.6
Scored at 2026-08-28 09:28
Listing SHA
704548f59bda…
Force block
— not fired
Score recovered
no
Elapsed
—