Vulnerability monitoring built
for industrial control systems
OTWarden watches the security feeds that matter to OT engineers — CISA, BSI, Siemens, Rockwell — and emails you the moment something affects your equipment. No noise, no manual checking.
Why OTWarden exists
OTWarden was built by Nicki, a commissioning engineer working in shipyards on Power Management Systems (PMS).
In that role, PLC faults are a regular reality — diagnosing why a generator controller isn't responding, tracing a comms failure back to firmware behaviour, chasing down a logic issue during sea trials. It's hands-on, high-stakes work where the equipment has to be right.
That experience raised an obvious question: how many of these issues have a known security vulnerability behind them? And when a new one is published, how would you ever find out in time?
The answer, at the time, was "manually check CISA and hope you remember." That wasn't good enough — so OTWarden was built instead.
"Working on PMS commissioning, you see firsthand how much OT equipment is in service without anyone tracking its known vulnerabilities. The engineers maintaining it are busy keeping systems running — they're not checking security bulletins. OTWarden is the tool I wished existed."
The problem we solve
CISA publishes hundreds of ICS-CERT advisories every year. So do Siemens, Rockwell, BSI, and others. Manually checking all of these — then cross-referencing against your own equipment list — is a full-time job nobody has time for.
Most OT engineers either check CISA infrequently and miss critical vulnerabilities in their window of exposure, or subscribe to the CISA mailing list and drown in advisories for PLCs they don't own. Neither is good enough when a vulnerability in your Siemens SIMATIC or Allen-Bradley PLC could mean unplanned downtime or worse.
OTWarden solves this by being the layer between the raw advisory feeds and your inbox. You tell us what you run; we tell you only what matters to you — with severity ratings, CVE IDs, and remediation steps included.
Where the data comes from
OTWarden aggregates from six authoritative sources, checked every 1–2 hours:
Who uses OTWarden
OT/ICS Engineers
Get alerted when a vulnerability affects your specific PLCs, SCADA systems, or HMIs — without wading through every CISA advisory.
OT Security Leads
Maintain a live vulnerability picture across your plant. Export audit-ready records to support NERC CIP, IEC 62443, and NIS2 evidence requirements.
Plant & Site Managers
Stay informed about risks to your operational technology without needing to read raw security advisories.
MSSPs & Consultants
Manage vulnerability monitoring for multiple client sites from a single Agency account. Per-client watchlists and isolated reporting.
Compliance support
OTWarden isn't just an alert service — it provides an auditable record of your vulnerability awareness and response activity. Professional and Team subscribers receive monthly PDF reports documenting every advisory matched to their watchlist, with severity ratings, CVE IDs, CVSS scores, and remediation status.
You can set per-alert remediation deadlines, track completion, and export a full audit trail as CSV. These records are suitable as evidence for NERC CIP, IEC 62443 patch management requirements, and NIS2 compliance documentation.
Free ICS security tools
No account required to use these:
Contact
Questions, feedback, or enterprise enquiries — we'd love to hear from you.