Software updates are among the least glamorous and most important parts of cybersecurity. Many successful attacks exploit known vulnerabilities for which a fix was already available. CISA maintains a catalog of vulnerabilities known to be actively exploited, and many of them hit common products such as operating systems, VPN appliances and firewalls.
In a facility that never closes, patching raises a real concern. Nobody wants a computer restarting in the middle of a medication pass or a server rebooting while the night nurse is charting. The answer is not to avoid updates. It is to plan them.
Many organizations think of Windows updates and stop there. A complete list includes:
Operating systems on servers, desktops and laptops
Web browsers and plug-ins
Office suites, PDF readers and other common applications
EHR client software and supporting components
Firewalls, VPN devices, switches, access points and routers
Server firmware and hypervisors
Printers and copiers
Phone system software
Security cameras and recorders
Mobile devices and tablets
Medical devices, with manufacturer guidance
If you do not have a current inventory, start there. You cannot patch what you do not know exists.
Not every patch carries the same urgency. Consider:
Severity: vendors and the common vulnerability scoring system rate how serious a flaw is.
Exposure: systems reachable from the internet, such as firewalls and VPNs, deserve the fastest attention.
Active exploitation: if attackers are using a flaw in the wild, treat it as urgent.
Criticality: systems essential to care need careful testing, but should not be neglected.
A sensible policy might call for urgent fixes on internet-facing devices within days, high-severity fixes within a couple of weeks and routine updates on a monthly cycle. Set targets that match your capacity and document them.
Predictability reduces surprises. Many facilities adopt a pattern such as:
Test group first. Apply updates to a few IT-managed machines and a pilot group, watch for problems for a few days, then deploy more widely.
Workstations: update during lower-activity windows, such as mid-morning or early afternoon, or overnight with automatic restart controls. Avoid shift changes and medication passes.
Servers: use a monthly maintenance window, often late at night or on a weekend, announced in advance.
Network devices: patch in off-peak windows with a rollback plan and a second person on call.
Emergency patches: have a process for out-of-band updates when a serious exploited flaw appears.
Publish the schedule to department heads so they know when brief interruptions may happen.
Configure active hours and restart restrictions, so computers do not reboot during peak use
Notify staff before maintenance, with clear start and end times
Make sure downtime procedures are ready for the EHR
Avoid patching all devices on a unit at once, so some remain available
Verify critical functions, such as printing to the medication room, after updates
Before deployment, confirm compatibility with your EHR and key applications, especially after major operating system or browser changes. Afterward, verify that updates actually installed. Reports from your management tools should show which devices are current and which are behind. Investigate devices that repeatedly fail.
Some devices run unsupported software or depend on a vendor to approve changes. For these:
Ask the vendor for their patching policy in writing
Isolate the device on a restricted network segment
Limit who and what can connect to it
Monitor it closely
Plan replacement, and include it in budgeting
Systems that have reached end of support, such as old Windows versions, no longer receive security fixes and carry growing risk.
Keep records of patching policy, schedules, exceptions and compliance reports. The HIPAA Security Rule expects you to protect against reasonably anticipated threats, and a consistent patching process is evidence that you are doing so.
Postponing updates indefinitely because of an old complaint
Forgetting network equipment and firmware
Having no way to confirm updates were applied
Applying updates to every machine at once without testing
Ignoring devices that sit in closets and rarely get attention
Managed patching takes time and discipline. UnityCare IT can inventory your systems, build a patching schedule that respects your clinical workflow and report on compliance so nothing falls through the cracks.
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Existing customers: support@unitycareit.com
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