Sicoob
8baseThis record tracks a ransomware attack claimed by the 8base group against Sicoob. 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
Sicoob is a cooperative financial institution present throughout Brazil. Millions of people are already part of this movement. Sicoob is the largest cooperative financial system in the country, with more than 8 million members and more than 4.6 thousand service points distributed throughout Brazil. We are a financial cooperative that offers members Current Account Services, Credit, Investment, cards, Social Security, consortium, insurance, bank collection, acquisition of electronic means of payment, among others. In other words, we have a complete portfolio to meet our audience. We are recognized as the third best financial institution in Brazil according to the ranking "Best Banks in the world 2024", carried out by Forbes in partnership with the market research company Statista. https://www.sicoob.com.br/
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.