CERT (Computer Emergency Response Team) is a group of cybersecurity professionals dedicated to addressing and managing cybersecurity incidents. Their primary responsibilities include protecting against, detecting, and responding to various threats such as data breaches and denial-of-service attacks. The concept of CERT originated in 1988 with the establishment of the CERT Coordination Center (CERT/CC) at Carnegie Mellon University. There are different types of CERTs, including national and regional ones, industry-specific ones, and global networks like FIRST and CERT/CC. Overall, CERTs play a crucial role in enhancing cybersecurity readiness, response, and resilience against the evolving threat landscape.