Tanium's selling point is that existing security solutions either don't work or require customers to make too many purchasing decisions.
Rather than focusing on firewall protection, antivirus software and a host of other solutions, Tanium's technology is designed to span across entire corporate networks so I.T. managers can locate and fight off hackers after they've entered the doors. Tanium refers to it as "15-second visibility and control."
Over half of Fortune 100 companies are using Tanium, and new customers since its last financing round include Intuit and Verizon. Hindawi, who started the company with his dad, David, in 2007, said the average client, whether corporate or government, spends $1.8 million a year with Tanium, up from $1.1 million last year. Revenue in 2015 will exceed $200 million, he said.
When Tanium raised its first outside round from Andreessen Horowitz last year, it had 35 employees. Headcount has since soared to 320.
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"A lot of people are waking up to the fact that adversaries attacking them, especially on the federal side but also on the commercial side, are really getting what they want very quickly," Hindawi said. "There's an awareness that the existing tool sets they've been using are completely failing them."
Hindawi said it made sense to raise the capital now to create an extended cushion and to potentially be able to acquire some security businesses that he expects to suffer in the coming months. He also wanted to bring public market investors on board so the company can start to gear up for an eventual IPO.
"It's really good to have that voice in the room," he said.
Tanium isn't the only company pulling in a large financing round amid the stock market turmoil. Apttus, a developer of sales software built on top of Salesforce.com's platform, announced on Tuesday that it raised $108 million to go after new customers in areas including manufacturing, life sciences and financial services. The financing puts Apttus into the billion-dollar club.
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Kate Mitchell, a partner at Scale Venture Partners, told CNBC on Tuesday that "if the public markets are the hare, we're the tortoise."
While a stock market route will likely have an impact on start-up investing, Mitchell said it could be beneficial to traditional venture investors by bringing down valuations and scaring off some of the new big money funds.
"A lot of investors that have been playing in the public markets have moved over to the private markets to get growth," Mitchell said. "Those tourists are going to go home, and I think that means there will be a better balance of supply and demand in our markets."