Illumio, a Silicon Valley security startup, it has raised $100 million (£68.3 million) in a Series C funding round as it looks to expand into the UK.

The Sunnyvale-headquartered company, which has raised more than $147 million (£100 million) in little over two years, said it plans to use the  funding to fuel international expansion, grow its sales and marketing efforts, and further develop its flagship product - the Illumio Adaptive Security Platform (ASP).

Banks like Morgan Stanley are using Illumio's software to protect valuable data ©iStock/merznatalia
Banks like Morgan Stanley are using Illumio's software to protect valuable data ©iStock/merznatalia

Illumio said its ASP product aims to help businesses manage enforcement across applications, workloads and processes as they are provisioned, operated and moved in any data centre or private and public cloud infrastructure. 

Illumio emerged from stealth mode last autumn with the endrosement of key customers including US investment bank Morgan Stanley, which uses its technolopgy. Other early adopters incluse telecoms giant NTT, electronics manufacturer Plantronics and Holywood talent agency CAA. 

Andrew Rubin, CEO of Illumio, said: “Perimeter security solutions leave 80 percent of the data centre vulnerable to attacks that often lead to costly data breaches.

“Illumio ASP is delivering security across all computing resources, infrastructures and applications. The funding will allow us to expand our market opportunity much more aggressively and to extend our platform deeper into more data centre and computing elements.”

It’s understood that Illumio is opening an office in London for sales and marketing. 

Illumio raised the round from existing big name investors like Andreessen Horowitz and General Catalyst, as well as new investors such as BlackRock Funds and Accel Partners.

Several well known individuals in the technology industry also believe that Illumio is a company worth backing, with Microsoft chairman John Thompson, Salesforce CEO Marc Benioff and Yahoo cofounder Jerry Yang, all getting behind the company. 

“The wide range of investors supporting Illumio reflects the company’s strong traction with Fortune 500 customers, the innovation of its policy and enforcement approach and the magnitude of the problem it solves,” said Thompson, who sits on the Illumio board. 

Without taking any credit away from Illumio, it's worth noting that funding rounds of this size are relatively common for fast-growing Silicon Valley startups due to the abundance of venture capital in the region.

Several UK startups, including enterprise collaboration firm Huddle and music streaming service Shazam, fly their CEOs and founders out to Silicon Valley to tap into a wider pool of investors.