Andrew Peterson
Founder, CEO
Signal Sciences



  • Top SaaS CEOs 2018


Please enter your comment!


Prior to co-founding Signal Sciences, Andrew has been building leading edge, highly performing product and sales teams across five continents for +15 years with such companies as Etsy, Google, and the Clinton Foundation. In 2016, O’Reilly published his book Cracking Security Misconceptions to encourage non-security professionals to take part in organizational security. He graduated from Stanford University with a BA in Science, Technology, and Society.



  1. Andrew Peterson is the CEO and Co-Founder of Signal Sciences. Under Peterson’s exceptional leadership, Signal Sciences has become the #1 and most trusted provider of next-gen WAF and RASP technology and one of the fastest growing cybersecurity companies in the world. Signal Sciences protects more than 15,000 applications and over 1 trillion production requests per month. Strong customer demand has tripled revenue growth each year as organizations deploy Signal Sciences to secure their most important web applications, APIs, and microservices. Unlike most CEOs, Signal Sciences was founded to solve the application security problem that Andrew and his co-founders experienced first-hand as technology and security practitioners at Etsy. The Etsy team needed to push new code (where it was common to do ten or more deploys a day) as quickly as possible, with the confidence that a security system would catch any bugs without slowing them down or crashing their web app. However, traditional security models and tools just didn’t cut it, and they grew frustrated with existing legacy web application security technology that neither met flexible development needs nor provided useful attack data. So, they built their own solution, which became Signal Sciences. With a unique perspective and a deep understanding of today’s digital world and security threat landscape, Andrew has built a company that is answering the security needs of some of the world’s largest organizations including Adobe, WeWork and UnderArmour. Because of Andrew’s background at Etsy, he has deep customer empathy that is ingrained in the core values of Signal Sciences. As a result, Signal Sciences was named a 2018 Gartner Peer Insights Customers’ Choice for Web Application Firewalls (WAF). The Gartner Peer Insights Customers’ Choice is a recognition of “the best Web Application Firewalls” on the market as reviewed by customers. Signal Sciences is the only vendor on Gartner Peer Insights with all “5 out of 5 star” ratings — a true validation that its next-gen WAF technology is the innovation customers have been waiting for. Thanks to Andrew’s leadership, Signal Sciences has attracted tier 1 investors: Signal Sciences announced a $35 million Series C, led by Lead Edge Capital, with participation from existing investors CRV, Index Ventures, Harrison Metal and OATV. Additionally, Lorrie Norrington, an Operating Partner at Lead Edge Capital and the former President of eBay and former Lead Board Director of Duo Security, has joined Signal Sciences’ Board of Directors.

    Staff, submitted on

  2. Basic knowledge of the space and willingness to grow

    Staff, submitted on

  3. NA

    NA, submitted on

  4. NA

    NA, submitted on

  5. NA

    NA, submitted on

See All Reviews >