Big Blue continues its recent acquisition spree with the purchase of Resilient, an IT security firm that it already partnered with. IBM (NYSE: IBM) also adds the technical expertise of Resilent’s CTO.

Bruce Schneier, the chief technology officer, is “a big name in the security world,” notes PC World. He’s an acknowledged thought leader in cryptology.

Notes Wikipedia: Schneier is “an American cryptographer, computer security and privacy specialist, and writer. He is the author of several books on general security topics, computer security and cryptography. Schneier is a fellow at the Berkman Center for Internet & Society at Harvard Law School, a program fellow at the New America Foundation’s Open Technology Institute and the CTO of Resilient Systems.”

The deal will enable IBM to offer an “end-to-end platform” for security ranging from incident response to analytics as part of its IBM X-Force offerings.

IBM says it is expanding security services to help “clients plan for, manage and respond to cyberattacks, tapping the knowledge of 3,000 consultants and security researchers globally. Resilient Systems’ award-winning platform will be a foundational component for these new services, along with IBM’s QRadar Security Intelligence Platform and planned integration with Resilient Systems’ technology across the full IBM Security portfolio.”

IBM says clients can now gain “remote incident response capability to help clients map how a breach occurred and take action to shut it down.”

Financial terms were not disclosed.

“By adding Resilient Systems’ technology and expertise, IBM will have an industry-leading range of capabilities to help clients respond to cyber breaches, across consulting, services, and products,” said Marc van Zadelhoff, general manager for IBM Security.

“IBM is the world’s fastest-growing enterprise security company, and we lead the industry in the detection and prevention of cyber attacks. With our intent to acquire Resilient Systems, and our other announcements today, we are doubling down on the incident response market. Cybersecurity needs to function like an immune system, both in preventing breaches, but also in quickly eradicating those that do occur.”

Reslient is based in Cambridge, Mass. and has some 100 employees.

IBM says it added 1,000 people to its cybersecurity work force in 2015 and recorded some $2 billion in revenue.

Big Blue, which employs several thousand people at its campus in RTP and across North Carolina, has made numerous acquisitions over the past year in security, digital ad management, analytics, the Internet of Things and other areas under Chair and CEO Ginni Rometty’s transformation plan.

On Monday, however, The register in the U.K. reported that IBM also is making some layoffs in that country.