What Is SIEM?

SIEM (Security Information and Event Management) ingests logs from numerous sources such as network, application, and server logs, in addition to the logs generated by various security tools, and centralizes these logs for analysis, alerting, and reporting. The main function of SIEM is to provide security personnel with the means to see and comply with legislation. Security teams take advantage of the SIEM for looking back at past incidents, linking together notifications from different sources, and creating audit or compliance reports out of SIEM’s vast record of all actions taken during the inquiry or continuous monitoring process.

A lot of companies use SIEM to fulfill compliance requirements such as HIPAA, PCI DSS, and GDPR. Companies that have to show proof of their security operations find SIEM indispensable due to its organized logging and reporting features. For instance, during a ransomware attack, SIEM helps the analysts to find out when and which systems got compromised, thus, reducing the chances of such incidents in the future.

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