Zero Trust: Lessons from the Halliburton Cyberattack

The recent cyberattacks on the Port of Seattle and on Halliburton’s oilfield operations shed light on a growing reality: critical infrastructure is squarely in attackers’ sights. Here’s what happened, and the actionable steps any organization can take right now to strengthen its defenses.

What happened to Halliburton

Halliburton, a major player in the energy sector, disclosed that it was hit by a cyberattack. The incident forced the company to shut down some of its systems to protect operations and data. Halliburton activated its cybersecurity response plan — bringing in internal and external experts, isolating critical systems, notifying law enforcement, and communicating with stakeholders to manage the fallout. It’s a stark reminder of how urgently critical infrastructure needs robust cybersecurity.

You don’t have to run an oilfield for this to matter. The same attack patterns hit small and mid-sized businesses every day — and most are far less prepared than Halliburton.

Step one: assess your current security posture

Start with a comprehensive security audit. Evaluate your existing cybersecurity measures, identify potential vulnerabilities, and assess compliance with industry standards. Understanding where you stand lets you prioritize what needs immediate attention.

Step two: implement a zero trust framework

Establish a zero trust model if you haven’t already. Zero trust assumes threats can be internal as well as external — nothing is trusted by default. It relies on rigorous authentication, continuous monitoring, and strict access controls based on the principle of least privilege. Every user and device is verified before being granted access to sensitive systems.

Step three: segment and secure your network

Make sure your network is properly segmented. Separate your operational technology from your enterprise IT systems so a breach in one area can’t spread to the rest. Segmentation limits attackers’ ability to move laterally and contains the impact of any single incident — clear boundaries between different parts of your infrastructure.

Moving forward

With those foundations in place, keep building:

• Patch relentlessly. Outdated systems are the easiest way in. Keep software and hardware current with the latest security patches to close known vulnerabilities.
• Train your people. Employees are your first line of defense. A team that knows current phishing tactics is also the first to notice when access to documents or databases is too easy — and can flag a security flaw before an attacker finds it.
• Document your incident response plan. Outline steps for containment, eradication, and recovery, and run regular drills so your team can respond fast and minimize downtime when something happens.

By taking these proactive measures, you can significantly strengthen your defenses and better protect your critical systems from the next attack. The organizations that treat security as an ongoing discipline — not a one-time purchase — are the ones still standing when the attack comes.