Cyber Security firm Sourcefire [FIRE] yesterday said that it has acquired Immunet, a provider of cloud computing-based anti-malware products, that extends the company’s real-time detection and prevention cyber security solutions to the cloud.

Sourcefire paid $17 million in cash up front for Immunet and could pay up to $4 million more in earn out provisions over the next 18 months. The company expects the deal to be dilutive to earnings per share by 10 cents this year and at least neutral to earnings next year.

“This acquisition immediately enables Sourcefire to provide endpoint protection from client-side attacks and Advanced

Persistent Threat,” Sourcefire said. “The cloud-based platform also enables innovative approaches to reputation services, data loss prevention and forensics. Combined with Sourcefire’s next generation network intrusion prevention system (IPS), customers get the most comprehensive protection against today’s threats from cloud to core.”

Immunet operates on a subscription-based business model and has over 750,000 users in 192 countries.

“This acquisition enables Sourcefire to accelerate our cloud initiatives and provides significant value to customers by protecting them against advanced client-side attacks,” John Burris, Sourcefire’s CEO, said in a statement.

Immunet’s founders and full-time employees will join Sourcefire.

“Sourcefire is the perfect company to accelerate Immunet’s path to market,” Oliver Friedrichs, Immunet Founder and CEO, said in a statement.