To manage IT security incidents effectively, the Security Operation Center (SOC) and the CSIRT need to work hand in glove. While the SOC monitors infrastructure and applications in order to spot security incidents at an early stage (security monitoring, security analytics and security alert handling), the Cyber Security Incident Response Team (CSIRT) is the rapid reaction force, the IT firefighters. This team deals with complex security incidents and initiates threat protection and security incident eradication measures. Together, the two teams make it possible to launch an early response to cyber attacks and to limit any damage.