Published onMarch 26, 2026Cloudflare WAF: How to Secure Your Applications in 15 Minutescloudflare-wafweb-application-securitycyber-security-best-practicesapplication-firewallsql-injection-preventioncloudflare-managed-rulesCloudflare WAF secures applications by filtering malicious traffic and blocking common cyberattacks. This guide explains how managed rulesets prevent data theft.