San Mateo, Calif. – AlienVault, the San Mateo-based developer of open-source security information and event management software, said on Monday it has raised $22.4 million in its third round of funding, co-led by Kleiner Perkins Caufield & Byers (KPCB) and Sigma.

Previous backers Trident Capital and Adara Venture Partners also participated in the round, which the company will use to expand sales, marketing and support functions, as well as further invest in research and development.

Ted Schlein, a managing partner at KPCB, will join the company’s board of directors.

The new round comes just six months after the company raised $8 million in its second round, led by Trident Capital. In January, AlienVault named Barmak Meftah as its new president and CEO and Roger Thornton as its chief technology officer.

This article was also published in Bay Area Tech Wire.

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AlienVault –

AlienVault – press release