Red4Sec

Red4Sec is a cybersecurity company based in Madrid, Spain working in offensive security, penetration testing, application security +2 more.

Red4Sec is a Madrid-based cybersecurity company specialising in offensive security. Its services include penetration testing of infrastructure, networks, cloud environments, web and mobile applications, and source code review. It also offers AI security assurance and LLM auditing, protecting against prompt injection, data leakage and adversarial attacks, and audits of smart contracts, DeFi protocols and decentralised ledger architectures. The company states that it works on critical environments and complex applications and that it has more than 10 years of experience. Its team is made up of security researchers and ethical hackers.