Scottish managed services outfit dns Limited has been bought by expanding US company SecureWorks.

Both companies are private so the size of the cash and stock deal has not been disclosed, but it will see both dns's offices, in Edinburgh and London, swallowed up by the Georgia-based company's growing empire of managed service hubs around the world.

Both companies were founded in 1999, and have made their business in the managed network market since then, but there the similarity ends. SecureWorks was primed with a reported $31.5 million in investor cash last summer, and is now a sizable player with 2,700 customers across several continents. In May it bought Verisign's managed security business for around $45 million.

SecureWorks also puts the accent heavily on managed security services, whereas 60-person dns has always been a much more low-key network management company serving its public-sector-oriented client base. It does, however, offer an identity and access management system with a good reputation.

"Being a part of SecureWorks will greatly benefit our clients and our business," said Graeme Cox, managing director and Founder of dns. "By combining our local expertise and security consulting talent with SecureWorks' managed security services, consulting and threat intelligence, we can greatly expand the depth and breadth of services we currently offer our clients."

Will dns's customers benefit from the deal? According to a company Q&A, dns will be able to offer a much expanded range of security services, as well as benefit from the much larger company's R&D budget. SecureWorks customers who happen to be multi-nationals will get better a UK presence.In security services, global points of presence are increasingly important for differentiation.

Techworld profiled the dns HQ off Edinburgh's Princes Street in 2007 - see Managed security - the war zone where nothing happens.