The lightweight alternative to a six-figure SIEM

You know you should be monitoring your Windows servers. You looked at Splunk, Sentinel, and QRadar, did the math, and closed the tab. The need didn’t go away — your compliance framework still requires log monitoring, and your servers are still generating thousands of security events that nobody’s reviewing.

Enterprise SIEMs charge per GB of ingestion and assume you have dedicated security staff to configure and maintain them. For a team of two managing 20 servers, that math never works. Arden takes a different approach: real detection coverage on hardware you already own, at a flat monthly cost.

What you actually need vs. what they're selling you

Enterprise SIEMs do three things: collect logs, run detection rules, and show you a dashboard. For that, you're paying for log ingestion by the gigabyte, agents on every endpoint, a cloud subscription, and usually a professional services engagement to configure it. Most SMBs end up paying $500 to $5,000 per month and still have rules they never tuned and alerts they never check.

What if you could get the detection part — the part that actually finds attacks — on hardware you already own? That’s the idea behind Arden. It’s a single Windows executable that reads your event logs directly, catches the attack patterns that real breaches follow, and serves a real-time dashboard on localhost. One executable. Runs locally. Agents are optional if you want multi-host monitoring.

What Arden gets you

The Standalone tier runs on a single machine and analyzes its local event logs. In under 60 seconds, you go from “I have no idea what’s happening on this machine” to a prioritized list of security findings with contextual explanations of what each alert means and what to do about it. You can import exported event logs from other machines, export findings for your records, and suppress false positives so they don’t clutter future scans.

The Network tier lets you monitor every Windows machine from a single dashboard. Deploy lightweight agents, scan your network for hosts, and see alerts across your entire environment in one place. Same detection engine — just running it across more machines.

Is it a replacement for CrowdStrike or Sentinel? No. Those tools do real-time endpoint protection, cloud telemetry, and managed threat hunting. But if your alternative is nothing — which is the reality for most SMBs — then detection rules running on your actual logs is infinitely better than hoping your antivirus catches everything.

For a deeper look at what specific events to watch, read our guide to the 5 Windows Event IDs every system administrator should monitor, learn how to spot lateral movement without a SOC, or see how hidden SIEM costs add up for small teams.