coemi.com.br

The Cyber Exposure Score is a published 0–100 formula built only from publicly observable signals. How this is calculated.

This domain scores better than 58% of the 221 Retail organisations we track (cohort median 78). The sample is seeded from public incident data, not a random cross-section of the sector.

Posture summary

Ransomware leak-site listings (1)

This domain is named on the public leak site of a ransomware group. A leak-site post is a claim published by the group — not a verified fact, and not a statement by this organization. Groups list victims who did not pay, overstate what they hold, and occasionally name the wrong company. What is certain is that the listing itself is public.

Leak-site postings are collected here from 2026-07-30 onwards; an earlier listing would not appear above.

Source: Ransomware.live

Public attack surface (7 hostnames in Certificate Transparency)

Hostnames this organization published in public TLS certificates. Passive OSINT — nothing was scanned; a wildcard certificate is in use, so the real footprint may be larger.

From the names alone: 0 remote access or sign-in, 1 admin tools, 0 non-production.

The hostname inventory — which forgotten hosts exist and where — is part of the complete audit for this domain.

Lookalike domains (8 registered of 80 checked, 3 serving no website)

Registered permutations of this domain. Existence is a fact, not an accusation — ownership and intent are not assessed. Those able to receive mail are the ones usable for invoice fraud and phishing. The Risk score (0–100) is a published formula weighing mail capability, registration age, spelling, what the homepage shows and phishing-feed hits, reduced when a name looks brand-owned (same registrar/nameservers, a redirect to this domain) or merely parked. How this is calculated.

5 further registered lookalike(s), 6 of them able to receive mail. The full list, with mail capability for each, is part of the complete audit.

Recommendations

• highEnforce DMARC

  No enforcing DMARC policy was observed. Publish a DMARC record and move to p=quarantine then p=reject to reduce spoofing.

• mediumEnable DNSSEC

  DNSSEC signing was not detected for this domain.

• criticalTreat data published on a leak site as disclosed

  This domain is named on thegentlemen's public leak site on 2026-11-05. A leak-site post is a claim published by the group, not a verified fact — but the post itself is public, and if it is accurate the data is already out. Confirm the claim, then work from the assumption of disclosure: rotate every credential that touched the affected systems, invalidate active sessions, and check your notification duties under GDPR Art. 33/34.

• highMonitor lookalike domains

  6 registered lookalike domain(s) can receive mail, which is what makes them usable for invoice fraud and credential phishing. 2 of those serve no website at all but can already receive mail, so a reply sent to them would be delivered although nothing is visible in a browser. With no website there is nothing to inspect, so watch for DNS or web changes rather than treating them as harmless. Monitor them and consider defensive registrations.

• mediumTurn off TLS 1.0 and 1.1

  coemi.com.br completed a handshake using TLS 1.0 and TLS 1.1, which browsers have dropped and security standards no longer allow. Set the minimum version to TLS 1.2 on the server or CDN; visitors on current browsers will not notice.

• lowTurn on the registrar transfer lock

  The registry shows no transfer lock on this domain. Most registrars offer it free, and it stops the name being moved away without an extra step.