Cisco Systems, Inc. (cisco.com)
Attack Intelligence
Cisco Systems, Inc. (cisco.com) was compromised in a ransomware attack attributed to shinyhunters in April 2026. The organization, operating in an undisclosed sector in Unknown, was added to the group's data leak site as part of an extortion campaign.
shinyhunters operates as a financially motivated ransomware-as-a-service (RaaS) operation, exfiltrating sensitive data and threatening public disclosure to pressure victims into paying ransom demands.
3 breaches (UNC6040, Salesforce Aura, and AWS accounts). Total over 3M Salesforce records containing PII, Github repositories, AWS buckets and other internal corporate data have been compromised. This is a final warning to reach out by 3 Apr 2026 before we leak along with several annoying (digital) problems that'll come your way. Make the right decision, don't be the next headline.
Intelligence correlations link this incident to 1 vulnerability(ies) including CVE-2026-35273, which may have been leveraged as initial access vectors or for lateral movement.