# Protecting legacy OT systems against modern cyberthreats

DevFeed: [Protecting legacy OT systems against modern cyberthreats](<https://devfeed.tech/articles/protecting-legacy-ot-systems-against-modern-cyberthreats-8346.md>)

Original publisher: [Read original article](<https://www.welivesecurity.com/en/critical-infrastructure/protecting-legacy-ot-systems-modern-threats/>)

Author: Tomáš Foltýn

Published: 2026-06-17T08:45:00Z

Content type: article

Language: en

Sources: [WeLiveSecurity](<https://devfeed.tech/sources/welivesecurity.md>)

Topics: [High Profile Threats](<https://devfeed.tech/topics/high-profile-threats.md>), [incident](<https://devfeed.tech/topics/incident.md>)

Tags: [attacks](<https://devfeed.tech/tags/attacks.md>), [authentication](<https://devfeed.tech/tags/authentication.md>), [critical-infrastructure](<https://devfeed.tech/tags/critical-infrastructure.md>), [cybersecurity](<https://devfeed.tech/tags/cybersecurity.md>), [incident](<https://devfeed.tech/tags/incident.md>), [logging](<https://devfeed.tech/tags/logging.md>), [manufacturing](<https://devfeed.tech/tags/manufacturing.md>), [networks](<https://devfeed.tech/tags/networks.md>), [production](<https://devfeed.tech/tags/production.md>), [security](<https://devfeed.tech/tags/security.md>), [update](<https://devfeed.tech/tags/update.md>)

## AI overview

Legacy operational technology in manufacturing can become a cybersecurity blind spot as industrial control systems connect to enterprise networks. The article highlights weak authentication, limited logging, insecure defaults, and difficult updates as risks that can lead to operational disruption.

## Source excerpt

Many manufacturing plants depend on OT systems that stay in service for many years. That long run can hide significant cybersecurity risks.