How does XDR differ from a SIEM?
Security information and event management
systems (SIEM) require rules to reduce the number of events, with
output that is unreliable and inconsistent. SIEM rules can vary in
quality, resulting in inaccurate or incomplete analysis. SIEMs require
long deployment engagements and must be maintained over time as the
threat landscape rapidly changes resulting in difficulties in
detecting incidents. SIEMs are used for log storage and compliance use
cases, and many traditional SIEMs do not focus on the endpoint, one of
the most vulnerable threat surfaces.
XDR differs from SIEM by integrating with
third party security tools and threat intelligence, focusing on threat
detection and incident response. XDR does not require rules to reduce
the number of events that are consumed, instead all events and alerts
can be analyzed at scale. XDR applies automated and consistent
decision-making into every alert or event that is analyzed to detect
actionable and malicious incidents. XDR is typically SaaS based, so
deployment is quick and easy without the need to maintain the solution.