Introduction

Web Application Firewall


Enterprises rely on applications and APIs for growth--and with our world-class web application firewall, expanding attack surfaces and novel attacks never get in the way.

Our powerful web application firewall is integrated with the rest our our leading cloud-delivered application security portfolio.

Cloudflare

WAF layered defenses

Cloudflare


  • Cloudflare managed rules offer advanced zero-day vulnerability protections.
  • Core OWASP rules block familiar “Top 10” attack techniques.
  • Custom rulesets deliver tailored protections to block any threat.
  • Exposed credential checks monitor and block use of stolen/exposed credentials for account takeover
  • Sensitive data detection alerts on responses containing sensitive data.
  • Advanced rate limiting prevents abuse, DDoS, brute force attempts along with API-centric controls.
  • Flexible response options allow for blocking, logging, rate limiting or challenging.

Stop account takeover

Cloudflare


Prevent successful credential stuffing attacks from taking over user accounts.

Prevent data exfiltration

Cloudflare


Stop data leaks to keep sensitive company data safe and private.

Block credential stuffing

Cloudflare


See and stop abusive login attacks using stolen credentials.

Cloudflare WAF Advantages

Our global 100 Tbps network sees up to 30M requests per second.

Complete application security from the same cloud network for an effective and uniform security posture.

Faster, easier security deployments for quicker mitigations and time-to-value.

A single Rust-based engine drives portfolio protections for no gaps in security.

Zero-day protections are in place fast for immediate virtual patching. Rules are deployed globally in seconds.

Our network's unparalleled visibility into threats yields the sharpest security and most effective machine learning.

Best Protection and Security

DDoS

The best DDoS protection


All Cloudflare customers are shielded by 100 Tbps of DDoS protection.

Every server in every one of our 250 data centers runs the full stack of DDoS mitigation services to defend against the largest attacks.

Application Security

World-class application security from Cloudflare


The Cloudflare web application firewall (WAF) is the cornerstone of our advanced application security portfolio that keeps applications and APIs secure and productive, thwarts DDoS attacks, keeps bots at bay, detects anomalies and malicious payloads, all while monitoring for browser supply chain attacks.

Bot Management

Deliver great customer experiences by protecting against bot attacks that harm web properties.

API Shield

Keep APIs safe and productive with API discovery, schema validation, mTLS, DLP, anomaly detection, and more.

Page Shield

Protect against 3rd party Magecart attacks carried out in visitors' browsers.

Cybersecurity Thoughts

Discover our latest thinking on cybersecurity, threat intelligence and related careers.

Overview of Top Mobile Security Threats in 2022

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Check Point Software acquires Dome9 to beef up multi-cloud options

The Israel-based cyber security firm Check Point Software acquired compatriot Dome9 with multi-cloud capability which offers a SaaS platform that aims to visualize organizations’ security postures in the public cloud. Companies can have verifiable infrastructure security for every public cloud, including the behemoths of AWS, Azure and Google Cloud Platform. This shall enhance the ability…

Unpatched Remote Hacking Flaw Disclosed in Fortinets FortiWeb WAF

Details have emerged about a new unpatched security vulnerability in Fortinet’s web application firewall (WAF) appliances that could be abused by a remote, authenticated attacker to execute malicious commands on the system. “An OS command injection vulnerability in FortiWeb’s management interface (version 6.3.11 and prior) can allow a remote, authenticated attacker to execute arbitrary commands…