RedShield

RedShield provides a managed application shielding service designed to mitigate web application and API vulnerabilities without requiring changes to underlying application code. The company was founded by penetration testers who observed that organizations frequently struggled to remediate findings from security assessments, with the same vulnerabilities recurring in reports year after year. The core offering, "shielding," works by rewriting application requests and responses at the network layer ("on the wire") to fix application-specific flaws in real time. Custom shield objects can transform application content, track session state, detect illegal inputs or outputs, and mitigate complex application logic flaws identified through penetration testing. This approach allows organizations to protect legacy and third-party systems that cannot be easily patched, while maintaining normal development cycles. RedShield positions its service as distinct from traditional web application firewalls (WAFs) or vulnerability scanning tools, emphasizing measurable risk reduction rather than alert generation. The company operates a bug bounty program to identify weaknesses in its shield policies and maintains partnerships with penetration testing firms. RedShield serves organizations in government, financial services, and critical infrastructure sectors, aiming to close the gap between vulnerability discovery and remediation. The company has offices serving North America, the UK and Europe, Australia, and New Zealand, with its origins tied to New Zealand.