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Web Application Firewall (WAF)

Your growing application portfolio is providing new and engaging experiences for your customers. That means more data to protect.

As you diversify your tech stack and cloud platforms to increase speed to market, you need active protection instead of passive signatures. You need coverage that provides granular, application-specific defense without a lot of effort. Legacy rules-based Web Application Firewalls (WAFs) weren’t built for modern tech. A next-gen approach is needed.


“It’s refreshing to work with a security product that not only provides exceptional security benefits, but also prioritizes performance, reliability, and overall operational manageability.”
Jenner Holden
“All vendors should take a leaf out of the Signal Sciences Professional Services Team’s book; they provide great value and were able to help us accelerate securing our applications much faster than we could on our own.”
Jason Marley
“Signal Sciences pulls out needles from the haystack in one quick view, and it integrates with all of our ChatOps tooling—it’s powerful. I don’t have to be a security expert to understand what’s going on.”
Ben Rockwood
One Medical
“We have always proactively prioritized security at One Medical. We wanted better visibility into our application layer, which is what led us to choose Signal Sciences.”
Jérémie Meyer de Ville

Signal Sciences enables the security team to understand and track malicious activity against our applications keeping our customers safe. After its deployment and configuration there have been zero false positives.

Anson Gomes, Lead Security Engineer, Betterment

Gartner Peer Insights Customers‘ Choice

Signal Sciences depth of protection and deployment options provides superior visibility, actionable insights and automated blocking to stop application attacks before they start. Our customers love our technology so much we received a Gartner Peer Insights Customers’ Choice Distinction for the Web Application Firewall category.

Why Signal Sciences Web Application Firewall

Signal Sciences was designed with modern application design in mind, but our technology, operating in reverse proxy, can also effectively protect legacy apps. It’s protection for your web app layer assets wherever they operate.

Signal Sciences Next-Gen WAFLegacy WAF
Deploy in under an hour
Compatible with servers, hybrid, on-prem, serverless & more
Web Attack Coverage Beyond the OWASP Top 10: Bad bots, app abuse, business logic attacks etc.
95% of customers run Signal Sciences in full blocking mode in production
Virtual Patching
PCI 6.6 Compliant

Designed to Protect the Modern Web

Reliable, Automated Blocking of Attacks

  • Runs directly in your web servers or application code
  • Fail-open architecture keeps your site running fast
  • Proprietary SmartParse requires no tuning or maintenance

DevOps Focused Protection

  • Easily deployed by operations teams
  • Cross-team visibility into metrics, performance and trend
  • Integrated into toolchains for quick access and collaboration

Coverage Across All Threats

  • Immediate blocking of common OWASP attacks
  • Blocks account takeovers, bad bots, application denial of service and more
  • Meets PCI 6.6 requirements, but doesn’t stop there
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