ArcSight
Enterprise SIEM platform from OpenText with AI-powered threat detection, compliance reporting, and log management.
What it does
ArcSight (now part of OpenText CyberRes) is one of the original enterprise SIEM (Security Information and Event Management) platforms - collecting and correlating security logs and events from across an organization's IT environment to detect threats, investigate incidents, and support compliance reporting. AI capabilities include AI-powered behavioral analytics that establish baselines of normal user and system activity and flag anomalous deviations (UEBA), machine learning correlation rules that identify threat patterns across high-volume event streams, and automated triage that prioritizes the highest-risk alerts for analyst attention. ArcSight is deployed in large government agencies, financial institutions, and global enterprises with complex, high-volume log environments requiring enterprise-grade compliance reporting.
Why AI-ENHANCED
ArcSight is an established enterprise SIEM platform that has integrated AI behavioral analytics, machine learning threat correlation, and automated alert prioritization into a mature log management and security event detection product.
Best for
Large government agencies, banks, and global enterprises use ArcSight for enterprise SIEM - AI behavioral analytics detecting insider threats and compromised accounts in high-volume event environments where manual analysis is impossible.
Limitations
ArcSight has lost market share to Splunk and Microsoft Sentinel over the past decade — the ecosystem of integrations, community content, and skilled practitioners is smaller than the current market leaders.
ArcSight is one of the most complex SIEMs to deploy and tune — organizations typically require specialized ArcSight expertise and ongoing investment in correlation rule development to maintain effective threat detection.
ArcSight's roots are in on-premise deployment — while cloud versions exist, organizations with cloud-first security architectures often find native cloud SIEMs like Microsoft Sentinel or cloud-delivered Splunk more operationally natural.
Alternatives by segment
| If you need… | Consider instead |
|---|---|
| Leading enterprise SIEM | Splunk |
| Cloud-native SIEM | Microsoft Sentinel |
| AI-powered threat detection | Darktrace |
ArcSight enterprise pricing not published. Licensed on EPS (events per second) capacity and deployment model. Large enterprise deployments run millions annually. OpenText CyberRes contracts negotiated.
