Karisson Caldeira

Karisson Caldeira is a seasoned information security analyst with extensive experience in security operations. Currently serving as a Senior Information Security Analyst at Vivo (Telefônica Brasil) since August 2025, Karisson previously held the role of Pleno Information Security Analyst at Telefónica Tech from April 2020 to August 2025, focusing on monitoring and responding to security alerts from various SIEM tools. Prior to that, Karisson worked as a Pleno Information Security Analyst at IMCNet Soluções de TI, where responsibilities included network routing and configuration, firewall management, and compliance with ISO 27002 standards. Karisson's career began as a Machine Operator at Maggion Ind de Pneus & Câmaras de ar from 2007 to 2012. Educational credentials include a degree in Information Security from Universidade Paulista and a bachelor's degree in Computer Science from Universidade UNG.