Arup Group

Arup Group was compromised in a ransomware attack attributed to fulcrumsec in May 2026. The organization, operating in the Business Services sector in United Kingdom, was added to the group's data leak site as part of an extortion campaign.

fulcrumsec 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.