S21sec
David Cerezo Diaz is a skilled Security Consultant at S21sec since December 2022, previously serving as a Level 1.5 Cybersecurity Analyst at Accenture España from January 2021 to December 2022. At Accenture, David specialized in security incident management utilizing SIEM tools such as Azure Sentinel and IBM QRadar, alongside handling security incidents with Microsoft 365 Defender. Prior experience includes working as a Level 1 Technician in a project for Mapfre with INELCOM, focusing on network administration and monitoring, and performing computer maintenance and repairs at App Informatica Buenavista. David holds a Higher Technician degree in Network Computer System Administration and a Technician degree in Microcomputer Systems and Networks from IES Azarquiel, along with a completed secondary education from IES Montes de Toledo.
This person is not in any teams
S21sec
S21sec is a cybersecurity company. S21sec offers various security-related services (e.g. protection of critical infrastructures and personal data protection) and software (e.g. information security management systems) S21sec is focused on providing security for governs, energy and critical infrastructures, finance institutions and telco industries.S21sec has a CERT section, a 24-hour security intelligence center, and a CyberCrime one, where it collaborates with governs and governmental institutions like Europool[1] and the FBI.[2]More than 20% of the Dow Jones Eurostoxx 50 companies are clients of S21sec.