When most teams think about cybersecurity, they picture laptops, servers, email accounts, and cloud apps. Printers rarely make the list. Yet every networked office printer and multifunction device (MFD) is a connected endpoint that stores data, processes confidential documents, and sits directly on your business network. Left unsecured, it can become an easy entry point for attackers and a quiet source of data leaks.
Printer security is the practice of protecting these devices, the documents they handle, the credentials they use, and the network they connect to. It combines access control, secure configuration, encryption, patching, monitoring, physical safeguards, and proper end-of-life handling across the entire device lifecycle. This guide explains what printer security means for businesses, where the real risks are, and how teams of any size can lock things down.
Why Printer Security Matters for Businesses
A modern business printer is far more capable than a simple paper-and-ink machine. It scans, emails, faxes, stores files, connects to the cloud, and often holds an internal hard drive or solid-state storage. That power is exactly what makes an unsecured printer risky.
Consider what passes through these devices every day: contracts, invoices, payroll records, medical forms, customer details, and internal reports. If a printer is misconfigured, that information can be exposed in several ways:
- Documents left in the output tray where anyone walking by can grab them.
- Stored copies on the device that remain readable long after the job is printed.
- Intercepted print traffic sent across the network without encryption.
- Network access gained through a printer that uses default admin passwords or open ports.
Because printers are often overlooked, they can be the weakest link. An attacker who compromises a printer may use it as a foothold to move deeper into systems that hold far more valuable data. The U.S. Federal Trade Commission specifically reminds businesses to inventory the sensitive information stored on digital copiers and similar equipment as part of protecting personal data.
What Printer Security Includes
Strong printer security is not one setting you flip on. It is a set of overlapping controls that map closely to recognized frameworks such as the NIST Cybersecurity Framework 2.0, which organizes protection into identifying, protecting, detecting, responding to, and recovering from risks. For printers, the core areas include:
Device and Network Configuration
- Changing default administrator passwords and disabling unused services or ports.
- Segmenting printers onto a separate network or VLAN so they cannot freely reach sensitive systems.
- Disabling unnecessary protocols such as legacy printing or remote management features you do not use.
Authentication and Access Control
- Requiring users to authenticate with a PIN, badge, or login before a job releases.
- Restricting who can change admin settings or update firmware.
- Applying least-privilege permissions so staff only access what they need.
Encryption, Storage, and Disposal
- Encrypting print jobs in transit and data stored on the device.
- Wiping internal storage securely before reuse, return, or disposal.
- Keeping audit logs to detect misuse and support investigations.
Common Printer Security Risks
Most printer incidents trace back to a handful of recurring weaknesses. Knowing them helps you prioritize fixes:
- Default or weak passwords on the admin console that attackers can guess in seconds.
- Outdated firmware with known vulnerabilities that were never patched.
- Open network ports and services that expose management interfaces to the internet.
- Unencrypted print traffic that can be captured and read on the network.
- Abandoned print jobs sitting in trays where unauthorized people can read them.
- Stored data on internal drives that is never wiped before a device is retired or returned at lease end.
- Unsecured Wi-Fi or direct printing features that bypass normal network controls.
- Loose user permissions that let anyone reconfigure the device.
NIST guidance on IoT and connected devices encourages treating networked printers as devices that need lifecycle security requirements, not as passive appliances. That mindset shift is often the difference between a protected fleet and an exposed one.
Printer Security Checklist for Business Teams
The table below turns the key actions into a scannable checklist you can assign to IT staff, an office manager, or a managed print provider. It is organized so each area has a clear action and a business benefit.
| Security Area | Recommended Action | Business Benefit |
|---|---|---|
| Device Inventory | List every printer, model, location, and firmware version. | You cannot protect devices you do not know about. |
| Access Control | Change default passwords and require user authentication. | Stops unauthorized configuration and printing. |
| Secure Printing | Hold jobs until the user releases them at the device. | Prevents confidential pages from sitting in trays. |
| Network Protection | Segment printers and close unused ports and protocols. | Limits how far an attacker can move. |
| Encryption | Encrypt data in transit and at rest on the device. | Protects documents even if traffic is intercepted. |
| Patching | Update firmware on a regular schedule. | Closes known vulnerabilities quickly. |
| Monitoring | Enable audit logs and review them for unusual activity. | Helps you detect and investigate misuse. |
| Disposal | Wipe storage before reuse, return, or recycling. | Keeps old data from leaking after the device leaves. |
How to Secure Network Printers Step by Step
If you want a practical sequence to follow, work through these steps in order. Each one builds on the last.
- Inventory your printers. Record every device, its location, and its current firmware.
- Change all default credentials. Set strong, unique admin passwords on each machine.
- Segment the network. Place printers on their own VLAN, separated from critical servers.
- Require authentication. Turn on secure release with PINs, cards, or user logins.
- Enable encryption. Protect both print traffic and stored data on the device.
- Restrict admin access. Limit configuration rights to a small, trusted group.
- Update firmware. Apply vendor patches promptly and enable automatic updates where available.
- Turn on logging. Capture activity so you can spot and respond to anomalies.
- Set retention rules. Automatically clear held jobs and temporary files after a short window.
Printer Security for Small Businesses
Smaller teams rarely have a dedicated security staff, but they still handle sensitive customer and financial data. The good news is that effective printer security does not require a large budget. NIST’s Small Business Cybersecurity Corner highlights practical habits that fit lean teams.
Keep It Simple and Consistent
- Turn on automatic firmware updates so patching happens without manual effort.
- Use the secure-print feature built into most modern devices instead of buying extra tools.
- Write a one-page rule set covering passwords, document handling, and disposal.
Lean on Support and Good Habits
- Consider managed print services if you lack in-house IT to handle configuration and monitoring.
- Train staff to collect printouts promptly and shred sensitive pages.
- Securely wipe or have the vendor wipe any device before it is returned or recycled.
What to Ask Before Buying or Leasing Printers
Security should be part of procurement, not an afterthought. Whether you buy or lease, ask vendors direct questions before signing:
- Updates: How long will this model receive security firmware updates?
- Admin controls: Can we enforce strong authentication and role-based access?
- Encryption: Is data encrypted both in transit and at rest?
- Storage wiping: How is the internal drive wiped at end of life or lease return?
- Audit logs: What activity can the device record, and how do we export it?
- Cloud printing: If we use cloud features, how is that traffic secured?
- Support: What incident and end-of-life support does the vendor provide?
Getting clear answers up front prevents nasty surprises, especially around data wiping when a leased device goes back to the provider.
Building a Printer Security Policy
A short, written policy turns good intentions into repeatable practice. It does not need to be long. A practical printer security policy usually defines:
- Ownership: Who is responsible for printer security and configuration.
- Approved devices: Which models are allowed and how they must be set up.
- Access rules: Authentication requirements and admin permissions.
- Patch cadence: How often firmware is reviewed and updated.
- Document handling: Secure release, retention limits, and shredding rules.
- Incident handling: Who to notify and what steps to take after a suspected breach.
- Disposal: How devices are wiped and decommissioned.
Frameworks such as NIST SP 800-53 offer a detailed catalog of controls you can borrow from for access control, configuration management, audit logging, and media protection, even if you only adopt the parts that fit your size.
Frequently Asked Questions
Can a printer really be a cybersecurity risk?
Yes. A networked printer is a connected endpoint that stores data and touches your network. If it has weak passwords, open ports, or outdated firmware, it can be exploited like any other device.
What is the first step in securing business printers?
Start by inventorying every printer and changing default admin passwords. You cannot protect or patch devices you have not identified.
Do printers store copies of printed or scanned documents?
Many multifunction devices keep data on internal drives, at least temporarily. That is why encryption and secure wiping before disposal or lease return are so important.
How often should printer firmware be updated?
Apply security updates as soon as the vendor releases them, and review firmware on a regular schedule. Enabling automatic updates, where supported, keeps this consistent.
Is cloud printing safe for businesses?
It can be, when the service uses strong authentication and encryption. Ask your vendor how cloud print traffic is secured and how access is controlled before relying on it for sensitive jobs.
Conclusion
Printers deserve the same security attention as the rest of your IT environment. Treated as networked endpoints, they call for access control, secure configuration, encryption, regular patching, monitoring, physical safeguards, and careful disposal across their full lifecycle. By inventorying devices, closing common gaps, following a clear step-by-step process, and writing a simple policy, businesses of any size can shrink their risk dramatically. Use trusted guidance from sources like NIST and the FTC to keep your approach current, and your printers will protect your documents and your network instead of quietly undermining them.
References
- NIST Cybersecurity Framework 2.0 – Authoritative framework for explaining how businesses should identify, protect, detect, respond to, and recover from cybersecurity risks, including print infrastructure risks.
- NIST SP 800-53 Rev. 5: Security and Privacy Controls for Information Systems and Organizations – Detailed catalog of security and privacy controls relevant to printer access control, configuration management, audit logging, media protection, incident response, and supply chain risk.
- NIST SP 800-213: IoT Device Cybersecurity Guidance – Useful for treating modern networked printers and multifunction devices as connected devices that need lifecycle security requirements before purchase and deployment.
- NIST Small Business Cybersecurity Corner: Securing Data & Devices – Business-friendly guidance for protecting company data and connected devices, with sections on authentication, data protection, IoT, physical security, privacy, and patching.
- Federal Trade Commission: Protecting Personal Information: A Guide for Business – Practical data privacy and security guidance for businesses, including inventorying sensitive data stored on digital copiers and other equipment.
