A lot has been written about Stuxnet, one of the big revelations was the malware had jumped an air-gap. The on-going debate is whether air-gaps work, or would joining the networks in a controlled way REDUCE the vulnerability.
Category Archives: Data Diode
The Need for Network Segregation in Critical Infrastructure Systems
A recent article in the NY Times claims:
The vast majority of targeted computer attacks now start with a malicious e-mail sent to a company employee. Now evidence suggests that the same technique could be used to attack watersheds, power grids, oil refineries and nuclear plants.
This cannot be allowed to happen, here I explore the issue in a little more detail.
Air Gaps, Firewalls and Data Diodes in Industrial Control Systems
Nexor have just released a briefing paper Air-Gaps, Firewalls and Data Diodes in Industrial Control Systems looking the issues around segregating industrial control system networks. What works best: Air Gaps, Firewalls or Data Diodes?
Posted in Data Diode, Nexor
Tagged Air Gaps, Data Diode, Firewalls, Industrial Control Systems, Unidirectional Networks
Can you trust a $1612 Data Diode?
The Data Diode technical model to achieve a one way network connection is relatively simple. However when you start to consider trust and assurance, it gets more complex.
DIY Data Diode for $1612
Is it viable to build a Data Diode for $1612?
Data Diode Technology Can Help Solve Complex Cyber Security Issues
Due to recent security incidents, there is now a significant debate with regard to what is the best way to protect Industrial Control Systems (ICS).
Generally, the debate focuses on whether networks should be isolated via an Air-Gap, or joined by well-configured Firewall(s) but the debate often misses a third option – Data Diodes.
Posted in Data Diode, Nexor
Tagged Air Gap, Data Diode, ICS, SCADA, Unidirectional Network
Overcoming Air Gap Security Failures
Air Gaps are not as secure as you might think.
