Sophos on Monday announced that it has completed its $859 million all-cash acquisition of SecureWorks.

When announcing the deal in October 2024, Sophos said the transaction will bring new products to the table, including business tooling for identity detection and response (ITDR), next-gen SIEM capabilities, operational technology (OT) security, and enhanced vulnerability risk prioritization. 

The plan is to combine the Secureworks Taegis XDR platform with Sophos’ managed detection and response (MDR) services to tap into lucrative markets across small, mid-sized, and enterprise segments. 

Sophos, which maintains headquarters in the UK, said the two companies are operating business as usual in the near term, working with their respective channel partners, MSPs and MSSPs.

“Sophos X-Ops is also expanding its threat intelligence and security services capabilities with the addition of the Secureworks Counter Threat Unit™ and security operations and advisory teams,” the company said.

With the acquisition, Sophos now has more than 28,000 organizations as Managed Detection and Response (MDR) service customers and protects more than 600,000 customers with its portfolio of MDR, endpoint, network, email, and cloud security solutions.

Last August, Atlanta-based SecureWorks cut approximately 15% of its staff and announced “certain real estate‑related cost optimization actions”.

With the completion of the acquisition, Secureworks’ common stock has ceased trading on Nasdaq.