Slim Spider Compromises Crypto Custody Information from Brazilian Banks

A new cyber threat group, Slim Spider, has been identified as a significant risk to Brazilian financial institutions, stealing sensitive crypto custody data.

3 min readCybersecurity

A newly identified cyber threat group, dubbed Slim Spider, has been implicated in a series of attacks against Brazilian financial institutions since March 2026. According to cybersecurity firm CrowdStrike, this group exhibits a sophisticated understanding of Brazil's financial systems, particularly in relation to instant payment mechanisms. Their operations suggest a strategic focus on acquiring sensitive information related to cryptocurrency custody, raising alarms among financial regulators and institutions. The group's ability to navigate the complexities of Brazil's financial landscape indicates a well-planned approach to cybercrime, posing a serious threat to the security of digital assets. As the cryptocurrency market continues to grow, the activities of Slim Spider highlight the urgent need for enhanced cybersecurity measures within the financial sector to safeguard against such targeted attacks.

Cybersecurity