A SIEM collects and correlates security events from across your entire estate — but only delivers value when it's tuned and watched. Nostra deploys, tunes and monitors your SIEM, turning millions of log events into a handful of alerts that matter.
Support from Dublin, Cork, Galway and Belfast — never outsourced.
And 98% client retention that speaks for itself.
Independently audited service delivery, every year since 2021.
Real-time dashboards and measurable commitments.
Attacks leave traces across many systems — a SIEM is the only practical way to correlate those traces, and regulations like NIS2 and DORA increasingly expect centralised security logging.
Not anymore — cloud SIEMs like Microsoft Sentinel make it affordable at SME scale, and managed delivery removes the staffing burden.
Directly — auditors and regulators ask for log retention, monitoring evidence and incident timelines, all of which the SIEM provides.
Managed cybersecurity services from Nostra — layered protection, 24/7 monitoring and compliance from SonicWall's Partner of the Year.
Learn more →SOC-as-a-Service from Nostra — 24/7 security analysts monitoring, triaging and responding to threats across your environment.
Learn more →Managed Detection & Response (MDR) and endpoint security from Nostra — EDR with 24/7 human-led response that stops ransomware in its tracks.
Learn more →Written by the Nostra team | Reviewed October 2026
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