OT & ICS Security
Operational technology cannot be tested like an IT network. Availability is the priority, the equipment is often a decade older than anything in the data centre, and an aggressive scan can stop a production line. Astra assesses OT environments with passive discovery, configuration review and traffic analysis, escalating to controlled active testing only in an isolated environment and only with explicit agreement.
What you get
Outcomes, not activity.
- Asset visibilityA full inventory of OT assets, network topology, protocols in use and every connection between the plant and the corporate network.
- Safe assessmentPassive scanning, configuration inspection and traffic analysis first. Nothing that risks the process runs against the process.
- IT/OT boundary reviewThe convergence point is where most incidents cross. We examine segmentation, remote access and the paths between the two estates.
- Control effectivenessFirewalls, intrusion detection, access control and monitoring evaluated for whether they would actually catch OT-specific activity.
How it runs
A defined sequence, agreed up front.
You know what happens in each stage, who is involved, and what lands at the end of it before the engagement starts.
- 01
Asset and topology discovery
Passive identification of controllers, HMIs, historians, engineering workstations and the protocols they speak.
- 02
Vulnerability assessment
Configuration review and traffic analysis against known weaknesses in the platforms and protocols present.
- 03
Control evaluation
Existing security controls at the boundary and within the OT network are assessed for coverage and effectiveness.
- 04
Controlled validation
Where agreed, selected findings are validated in a testbed or isolated segment to establish real impact without touching production.
Deliverables
What lands on your desk.
Written for two audiences: the engineers who have to fix it and the executives who have to fund it.
- OT asset inventory and network topology map
- Protocol and communication path analysis
- Vulnerability findings with OT-appropriate remediation
- IT/OT segmentation and remote access review
- Monitoring and detection recommendations for the OT estate
Related
Often engaged alongside
Next step
Scope a ot & ics security engagement.
Half an hour with a practitioner. You will leave knowing what the work involves, roughly how long it takes, and what it would find.