CEMAF PARTICIPACOES E ADMINISTRACAO DE BENS LTDA
8baseThis record tracks a ransomware attack claimed by the 8base group against CEMAF PARTICIPACOES E ADMINISTRACAO DE BENS LTDA. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAPWindow Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.
Attack Summary
cnpj.info is a Brazil-based online platform serving the Construction and Real Estate sectors by providing public access to the National Registry of Legal Entities (CNPJ) for company identification searches. The site enables users to search by organization name or CNPJ number, offering free public access to legal entity data administered by the Brazilian Ministério da Fazenda. As a third-party registry service, it complements official government portals by simplifying access to corporate identification numbers for citizens and businesses. The platform was listed as a ransomware victim associated with the threat actor 8base.
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.