A multifunction printer can scan contracts to email, store jobs on an internal drive, connect to cloud services, and communicate with dozens of workstations. That makes it far more than an office peripheral. Knowing how to secure printer networks is a practical part of protecting business data, maintaining uptime, and keeping document workflows moving without creating unnecessary friction for employees.

Printer security is often overlooked because the device sits quietly in a copy room or shared workspace. But a poorly configured printer can expose confidential documents, provide a path into the wider network, or create downtime when a vulnerability is exploited. The right approach is not to lock down every feature blindly. It is to align printer controls with the way your people actually print, scan, store, and share information.

Start With a Complete Printer Inventory

You cannot protect devices that no one is actively managing. Begin by identifying every printer, copier, multifunction device, label printer, and print server connected to the organization. Include headquarters, branch offices, warehouses, home offices, and any device connected through Wi-Fi or a guest network.

For each device, document its model, serial number, physical location, IP address, firmware version, network connection, assigned owner, and available functions. Record whether it stores documents locally, sends scans to email, connects to cloud storage, or supports mobile printing. These details help IT teams determine which devices present the greatest exposure.

Older equipment deserves particular attention. A device that still prints reliably may no longer receive firmware updates or support current encryption standards. Replacing it may cost more upfront than keeping it in service, but the trade-off can be lower security risk, fewer service disruptions, and less time spent troubleshooting unsupported hardware.

How to Secure Printer Networks With Segmentation

Printers should not have the same unrestricted access as employee laptops, servers, or finance systems. Network segmentation places printers in a separate, controlled network zone and limits the traffic they can send or receive. If a device is compromised, segmentation helps contain the issue rather than allowing it to spread across the environment.

A practical configuration depends on the size and complexity of the organization. A smaller office may use a dedicated printer VLAN with firewall rules that permit only approved workstations and print management systems to communicate with devices. Larger organizations may need separate segments for office printers, production print equipment, warehouse label printers, and guest or mobile printing.

Avoid placing business printers on guest Wi-Fi. Guest networks are intended for visitors and unmanaged personal devices, not systems that handle internal documents. Wireless printers should use business-grade encryption and be connected only to approved corporate wireless networks. When a wired connection is available, it is often the better choice for fixed devices because it is easier to control and generally more stable.

Segmentation should support business operations, not interrupt them. For example, a shipping team may need its label printers to communicate with a warehouse management application, while a legal department may need secure scan-to-folder access. Define those approved connections clearly instead of opening broad network access for convenience.

Change Default Credentials and Control Administration

Default administrator usernames and passwords are a common weakness. They are widely known, easily guessed, and sometimes left unchanged for years after installation. Every networked printer should have a unique, strong administrator password and a documented process for storing and updating it.

Separate administrative access from everyday use. Most employees should be able to print, scan, or release jobs without having the ability to alter network settings, change email configurations, or disable security features. Limit administrator privileges to authorized IT staff or a managed service provider with clear accountability.

Also disable services that are not needed. Many devices ship with web management tools, file transfer protocols, remote discovery services, and legacy printing protocols enabled by default. Each unused service creates another potential entry point. Keep only the functions required for the device’s role, and use encrypted protocols whenever they are available.

Keep Firmware, Drivers, and Print Servers Current

Firmware updates correct known vulnerabilities and improve device stability. Yet printer firmware is frequently treated as optional maintenance because updating a device can require scheduling, testing, or a short period of downtime. That delay can leave a known security issue unaddressed.

Create a regular review process for printer firmware and approved drivers. Critical security updates should be evaluated promptly, while routine updates can be handled during planned maintenance windows. For organizations with multiple locations, centralized fleet management makes this work more consistent and reduces the chance that a remote office is overlooked.

Print servers and print management software require the same attention. They may store user information, device configurations, and print job data. Apply operating system patches, restrict administrative access, back up configurations, and monitor the server for unexpected activity. A secure printer connected to an unprotected print server is not a secure printing environment.

Protect Documents Before, During, and After Printing

Network security is only part of the equation. Sensitive information can be exposed when pages sit in an output tray, scan files are sent to the wrong recipient, or data remains on a device hard drive after a lease ends.

Secure print release is one of the most effective controls for shared devices. Instead of printing immediately, a job waits in a secure queue until the employee authenticates at the device using a badge, PIN, mobile credential, or directory login. This reduces abandoned documents and can reduce waste from jobs employees no longer need.

For scanning, establish approved destinations and authentication methods. Scan-to-email should use secured mail settings and should not rely on shared credentials that are never changed. Scan-to-folder workflows should use least-privilege access so the device can write only where it needs to. In compliance-sensitive settings, staff should understand when a document belongs in a document management system rather than an email inbox or shared desktop folder.

Many multifunction devices also include internal storage. Configure encryption where supported, overwrite or sanitize stored job data, and establish procedures for device return, replacement, or disposal. A leased copier leaving the office can still contain business information if data removal is not handled correctly.

Use Identity-Based Access Where It Adds Value

Not every organization needs a complex authentication process at every desktop printer. A small team using a single low-risk device may prioritize simplicity. But for shared multifunction devices, departments handling confidential information, and locations with heavy document traffic, identity-based controls provide clear benefits.

Authentication creates accountability. IT and operations leaders can see who is using devices, apply print rules by department, and investigate unusual activity. It also supports practical cost control by making large-volume printing visible rather than treating print spend as an untraceable overhead expense.

Rules should reflect real workflows. Color restrictions may make sense for routine internal documents but not for client proposals or engineering drawings. Finance, HR, legal, and healthcare teams may require tighter release settings than a general office area. The goal is sensible control, not a one-size-fits-all barrier that encourages employees to find workarounds.

Monitor Devices and Prepare for Incidents

Printer events belong in the organization’s broader monitoring and incident response process. Review failed login attempts, unexpected configuration changes, new administrator accounts, unusual outbound connections, and devices that suddenly stop checking in with management tools. These signals do not always indicate an attack, but they deserve investigation.

Maintain configuration backups for critical devices and document who to contact when a printer-related security issue occurs. If a device is suspected of compromise, the response may include isolating it from the network, preserving relevant logs, changing credentials, reviewing connected systems, and restoring a known-good configuration.

This process is particularly valuable for distributed organizations. A branch office may not have onsite IT staff, and a device issue can quickly become a productivity problem when scanning, invoicing, shipping, or records processing depends on that equipment.

Make Printer Security Part of Office Operations

The most effective printer security programs combine technology controls with ownership. IT may manage network settings and updates, while operations leaders define workflow requirements, department managers reinforce secure document handling, and employees know how to report a suspicious device message or misplaced printout.

A managed print and IT partner can help organizations standardize this work across their fleet, especially when devices, locations, and workflows have grown over time. The value is not simply monitoring toner or repairing equipment. It is creating a managed environment where hardware, network controls, document processes, and support responsibilities work together.

Printer networks do not need to be a blind spot between office operations and cybersecurity. With clear ownership and practical controls, they can become a dependable part of a more secure, productive workplace.