skip to Main Content


Signal Sciences Raises $35M to Accelerate Wide-Scale Market Expansion and Technology Innovation

Adds Industry Luminary Lorrie Norrington to Board of Directors; Funding fuels continued explosive growth in $7 Billion Web Application Security market
CULVER CITY, Calif.   -

Signal Sciences, the fastest growing web application security company in the world, today announced that it has raised $35 million in Series C funding to continue its explosive growth and disruption of the web application firewall (WAF) market. The round is 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. With this investment, Signal Sciences will aggressively accelerate its market expansion and product innovation to meet explosive customer demand for its next-gen WAF and Runtime Application Self Protection (RASP) solutions.

Named a December 2018 Gartner Peer Insights Customers’ Choice for Web Application Firewalls (WAF), Signal Sciences provides the only next-gen WAF and RASP solution that enables digital transformation and enterprises to shift to cloud and DevOps. The company’s revolutionary solution provides the broadest coverage against real threats and attack scenarios as well as integrations into DevOps tools, such as Slack, JIRA, PagerDuty, and DataDog, among many others, that enable engineering and operations teams to share security responsibility.

“We believe our rapid customer growth and five-star Gartner reviews validate that we have, by far, the best WAF technology in a surging web app security market, and we’re using our funding to continue to build on that lead,” said Andrew Peterson, CEO at Signal Sciences. “We’re doubling down on engineering innovation and partnerships to deliver maximum security value for our customers as well as expanding key areas of our business to drive continued growth. This will be a massive year for Signal Sciences.”

Web Application Attacks Leading Source of Successful Breaches

Enterprise security challenges have soared in the era of cloud and DevOps as companies struggle to address threats without sacrificing digital agility and competitiveness. Web application attacks continue to be the leading source of successful breaches, according to the 2018 Verizon Data Breach Investigations Report (DBIR), causing costly and sometimes devastating harm to businesses. However, vendors in the legacy WAF market have not innovated in years, providing complicated products that can’t block attacks at scale without breaking production applications. Targeting a market ripe for disruption with the first truly next-gen WAF and RASP solution, Signal Sciences has tripled its customer count and revenue every year. The company now protects more than 10,000 applications and over a trillion web requests per month.

Market-Changing Application Security Technology

“It’s impressive to see Signal Sciences transform the applications security market,” said Lorrie Norrington, Operating Partner for Lead Edge Capital. “The skyrocketing numbers in the web app security market shows the urgent need for better protection in today’s dynamic threat landscape, and Signal Sciences has set a new standard with automation and integrated technology that excels at digital speed and enterprise scale. This is what market-changing technology looks like, and it’s providing the protection for business-critical apps that companies need today. We’re thrilled at the opportunity Signal Sciences presents and are excited to see strong innovation in its next-gen product.”

“Companies are prioritizing better ways to protect the applications that power their business,” said Scott Crawford, Research Director at 451 Research. “According to 451 Research’s Voice of the Enterprise Digital Pulse: Budgets and Outlook 2018 Study, security is one of top two areas of enterprise IT budget increase among enterprises, while application security is seeing the largest proportion of security budget increase year-over-year.”

“Signal Sciences in particular seeks to disrupt a market for operational application protection that is ripe for new approaches. Signal Sciences has demonstrated a distinctive approach that is responsive to changes in the marketplace, while showcasing an impressive roster of customers, and is well positioned to benefit from these trends,” added Crawford.

The patented Signal Sciences architecture provides security, operations and development teams with the visibility, security and scalability needed to protect against the full spectrum of threats their web applications now face. Breaking through the limitations of the legacy WAF approach, Signal Sciences is used in fully automated blocking mode by a stunning 95 percent of customers, including Under Armour, Adobe, Datadog, One Medical, WeWork and many others, eliminating the learning, tuning and complexity required from legacy WAF solutions.

Related Application Security Links
Follow Signal Sciences

Gartner Peer Insights Customers’ Choice constitute the subjective opinions of individual end-user reviews, ratings, and data applied against a documented methodology; they neither represent the views of, nor constitute an endorsement by, Gartner or its affiliates.

About Signal Sciences

Signal Sciences is the fastest growing web application security company in the world. With its award-winning next-gen WAF and RASP solution, Signal Sciences protects over 10,000 applications and over a trillion production requests per month. Signal Sciences’ patented architecture provides organizations working in a modern development environment with comprehensive and scalable threat protection and security visibility. The company works with some of the world’s most recognizable companies, like Under Armour, Adobe and WeWork, across industries, including five of the top ecommerce companies, five of the largest software companies, in addition to many others in the financial services, retail, healthcare, media and entertainment, and government sectors. In 2018, Signal Sciences won Technology of the Year from InfoWorld and Computing’s DevOps Excellence Award for Best DevOps Security Tool. For more information, visit Signal Sciences or follow @SignalSciences.

About Lead Capital

Lead Edge Capital is a growth stage investment fund with $1.8 billion under management, and portfolio companies across the internet, software and consumer spaces – including Alibaba Group, Asana, Bazaarvoice, Duo Security, Spotify, Toast and Uber. Lead Edge Capital offers its entrepreneurs flexible capital and extensive domain expertise via its robust Limited Partner Network, a global advisory group of leading executives, entrepreneurs and dealmakers who have built and run some of the most successful companies. Lead Edge Capital leverages its LPs to connect companies with the customers, partners, talent and advisors needed to accelerate success. Lead Edge Capital was founded in 2009 and has offices in New York City and Southern California.

Media Contact

Juanita Mo
Director of Communications, Signal Sciences

Kasia Hall
Matter Communications for Signal Sciences

Ready to get started?

Back To Top