Signal Sciences | 5,355 followers on LinkedIn. Our next-gen #WAF & #RASP helps secure the web applications, APIs, & microservices of the world's leading companies. | Acquired by Fastly, Inc. in oct 2020. Signal Sciences is the fastest growing web application security company in the world. Our award-winning next-gen WAF and RASP solution protects 40,000+ applications and APIs with over 2 trillion production requests per month.