AH had already taken part in a financing round for the company alongside Index Ventures and T-Venture, the corporate venture arm of telecoms giant Deutsche Telekom.
CipherCloud said it would use the new funds to expand its sales and marketing and further develop its software.
AH board partner and former Fortify Software CEO John Jack will join the CipherCloud board following the investment.
The business says it gas grown its customer base to 1.2 million users since it was launched in 2010, and protects about 100 milllion customer records.
Jack said, “Security is the number one inhibitor preventing organizations from adopting cloud applications, and CipherCloud has solved this huge problem in a very elegant way.
“CipherCloud is moving up one of the fastest enterprise adoption curves I have ever seen.
“The combination of technology, team and market opportunity makes this a compelling investment.”
Last month internet entrepreneur Chris Dixon joined Andreessen Horowitz as its seventh general partner.
Previously, Dixon co-founded SiteAdvisor and Hunch, both of which had successful exits to McAfee and eBay, respectively.
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