Incident Details
- Victim: Semple & Cooper
- Country: GB
- Actor: interlock
- Source: http://ebhmkoohccl45qesdbvrjqtyro2hmhkmh6vkyfyjjzfllm3ix72aqaid.onion/leaks.phphttp://6mwjyc64rnkht3qc4bv7svpufmbvm3k73vekxgdlsbqzx5toueq3ndyd.onion/index.php?p=
- Discovered: 2025-05-21 00:20:36.659870
- Published: 2025-05-21 00:19:31.301218
Information
- The firm Semple & Cooper is a leading regional Certified Public Accounting firm based in the Southwest.
- The firm offers a range of professional services including accounting, auditing, tax planning, compliance, and management consulting.
- Semple & Cooper is dedicated to serving diverse sectors such as technology, healthcare, retail, and non-profits.
- The firm emphasizes innovation and personalized solutions tailored to each client.
- The ransomware attack involved actors known as Interlock, Semple, Marchal & Cooper, LLP.

Disclaimer: This post is based on public claims made by the ransomware group "interlock". I cannot confirm the accuracy of the information. However, I would be happy to share any official statement from the affected organization to provide clarification.