Just before the Iran-U.S. ceasefire deal hit the news, the U.S. announced that Iran-affiliated threat actors attacked critical U.S. infrastructure through internet-facing Operational Technology (OT) systems, which are used to control physical processes such as water systems and energy grids.
Cybernews’ Senior Information Security Researcher Aras Nazarovas provided some extensive commentary on this. He explains what made these attacks possible and what protective measures should be taken with Operational Technology (OT) systems.
This is not just a one-off campaign – it’s a repeatable attack model
“Attackers didn’t rely on anything particularly advanced. They took advantage of OT systems that were supposed to be isolated but ended up exposed to the internet. This is a very common issue in OT systems, and the same kind of attack can be repeated again and again, until the systems are properly secured.”
OT environments often lack the standard security features that IT environments have
“OT environments often don’t have the same security controls as IT systems. Instead, they rely much more on physical security and isolation. These systems are built to stay active 24/7, so a lot of standard protections like encryption or strong authentication aren’t always in place. In some cases, traffic is unencrypted for simplicity, and default passwords are still used.
That’s why isolation is so important. OT systems are supposed to be air-gapped and kept completely separate from IT networks and the internet. In the Iranian attacks on U.S. critical infrastructure, that basic rule wasn’t followed – systems that should have been isolated were exposed online. To avoid this kind of situation, the first step is simple: don’t connect them to the internet in the first place.”
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This entry was posted on April 8, 2026 at 9:08 am and is filed under Commentary with tags Cybernews. You can follow any responses to this entry through the RSS 2.0 feed.
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Iran-linked attacks on U.S. infrastructure surfaced by the U.S.
Just before the Iran-U.S. ceasefire deal hit the news, the U.S. announced that Iran-affiliated threat actors attacked critical U.S. infrastructure through internet-facing Operational Technology (OT) systems, which are used to control physical processes such as water systems and energy grids.
Cybernews’ Senior Information Security Researcher Aras Nazarovas provided some extensive commentary on this. He explains what made these attacks possible and what protective measures should be taken with Operational Technology (OT) systems.
This is not just a one-off campaign – it’s a repeatable attack model
“Attackers didn’t rely on anything particularly advanced. They took advantage of OT systems that were supposed to be isolated but ended up exposed to the internet. This is a very common issue in OT systems, and the same kind of attack can be repeated again and again, until the systems are properly secured.”
OT environments often lack the standard security features that IT environments have
“OT environments often don’t have the same security controls as IT systems. Instead, they rely much more on physical security and isolation. These systems are built to stay active 24/7, so a lot of standard protections like encryption or strong authentication aren’t always in place. In some cases, traffic is unencrypted for simplicity, and default passwords are still used.
That’s why isolation is so important. OT systems are supposed to be air-gapped and kept completely separate from IT networks and the internet. In the Iranian attacks on U.S. critical infrastructure, that basic rule wasn’t followed – systems that should have been isolated were exposed online. To avoid this kind of situation, the first step is simple: don’t connect them to the internet in the first place.”
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This entry was posted on April 8, 2026 at 9:08 am and is filed under Commentary with tags Cybernews. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.