Your firewall is secure. Your passwords are complex. Your employees are trained to avoid sketchy links.
But there is one device on your network that you, your team, and attackers aren’t looking at closely, and hackers are already aware.
Your office printer processes payroll files, client agreements, HR documents, and legal forms every day. It keeps duplicates of everything it processes. It is a machine plugged into your corporate network with access everywhere. In many businesses, it has never once been secured.
It is not flagged in security audits. It has never been checked for its firmware or the default password that it shipped with two years ago.
This isn’t an oversight, it’s an opportunity.
Successful businesses do nothing overly complex. They fix the security vulnerabilities that everyone else overlooks. This guide provides clear instructions and a checklist of steps you can take right now to improve office printer security.
Why Office Printer Security Matters?
Your typical IT department spends a good amount of money on firewalls, endpoint security, and servers. When it is all said and done, they totally overlook the biggest hole in their defenses—the printer on the table.
This is a financially damaging oversight.
Printers are fully networked computers with hard drives and access to cloud services. They hold your most private information daily, from payroll to business strategy.
According to the Quocirca report, The Print Security Landscape, companies are increasingly at risk. One-fifth of organizations lost data due to print security failures in just 12 months. As a result, confidence among leaders is at a record low. Just 16% of IT decision-makers are now confident that their print environment is secure (down 3% from the previous year).
As such, issues arising from vulnerabilities present in your printer are:
- Data Breaches – Documents are captured in transit or from device memory.
- Regulatory Fines – HIPAA, GDPR, and PCI DSS apply to all printed data.
- Network Intrusions – Attackers gain access through your network via a compromised printer.
- Damage to Reputation – A printer security breach still constitutes a data breach in your customers’ eyes.
- Printers are endpoint devices. They should be afforded the same level of security scrutiny as all laptops, servers, and mobile devices.
Common Printer Security Vulnerabilities
To begin increasing your office printer’s cybersecurity, you must understand where the holes are. Where are the vulnerabilities and risks that hackers will target in a printer’s security?
1. Default Credentials Left Unchanged
All printers have a default, factory-provided login and password – something like “admin/admin.” Attackers know all these defaults across manufacturers and models. They scan networks for printers still set up with default values and waltz right in.
2. Outdated Firmware
It should be emphasized that a printer firmware update is not part of an optional service procedure – it is a security patch. Manufacturers release firmware updates specifically to close known exploits. A delay in applying the patch gives an attacker access to the target system’s security diagram.
3. Unencrypted Print Traffic
All the documents your computer sends to the printer travel across your network. All these documents are sent in clear text if you are not using SSL/TLS to encrypt them. Anyone connected to the network can read them.
4. Open and Unused Network Ports
Printers have a range of available ports. These unused open ports provide easy access points. Attackers scan these ports, then exploit them to deliver and install malicious software or gain further access.
5. No Controls to Prevent Unauthorized Printing
If the device does not require authentication, it leaves a significant security hole. It lets anyone physically near the printer copy/scan/print whatever they please. Anyone connected to your printer’s network is also a huge security risk. This atmosphere invites opportunistic and internal attacks.
6. Unclaimed Documents in Output Trays
This is a physical security vulnerability. Papers on an output tray are viewable, photographable, or simply stealable by anyone passing by. It’s one of the most common and most preventable data leaks.
7. Unsecured Remote Access
These controls can be managed remotely. While this is desirable, it is also quite clearly an entry into your premises when not secured by VPN or SSL controls.
Best Practices to Improve Office Printer Cybersecurity
Understanding the threats is step one; actually mitigating them is what keeps you safe.
Fortunately, it does not take a large IT staff and an enormous budget to execute. Each of the tips below is really a configuration change, no great expense. They should be implemented in this order, as each one addresses a vulnerability that attackers seek.
1. Run a Printer Firmware Update — Right Now
Don’t wait until your next maintenance window! Go to your manufacturer’s support page right now, find your printer model, and apply the firmware update.
And then set up a system to ensure this never slips:
- Enable the automatic firmware update notification feature on the printer manufacturer’s website.
- Formally schedule an internal firmware review each quarter.
- Document every update that has been applied for compliance purposes.
Applying printer firmware takes minutes. The damage from a known, unpatched vulnerability could be enormous.
2. Change Default Credentials before Anything Else
Do not connect the printer to your network with the default administrator name and password. Changing these administrative login details is your very first step. It should be performed before anything else.
What defines a strong credential is:
- At least 12 characters long.
- Includes numbers, letters, and symbols.
- Unique to this printer. A reused password is still an exploit.
These credentials need to be stored in a password manager, not on a sticky note or on the printer itself.
3. Encrypt All Print Traffic
Enable SSL/TLS encryption for all traffic to and from the printer. Use HTTPS, not HTTP, when accessing the printer’s web management. Employees sending remote print jobs require a VPN connection before the print job can be sent.
Encryption means that if anyone intercepts the data, it cannot be read.
4. Segment Your Printer Network
Put printers onto their own VLAN. This is a distinct segment on the network that will not give attackers access to your core corporate network. Create an ACL that specifies what systems and devices will have access to each printer.
With one move, the printer can no longer serve as an access vector into servers, clients, and confidential data stores.
5. Prevent Unauthorized Printing with Authentication Controls
Device Authentication is the most fundamental step you can take to stop unintended printing. You can either have your users authenticate via:
- PIN Codes – Whereby the user must punch in their own PIN at the printer for the print job to be released.
- Swipe Cards – Users log in via an individual card associated with their user account. This is quick, auditable, and highly efficient.
- Biometric Authentication – Users utilize fingerprint or facial recognition. This method offers the highest level of security and is often used in sensitive environments.
Business printers commonly offer a feature called secure pull printing. With this approach, the print jobs are sent to the printer as encrypted data. They remain stored safely in the queue until the authorized user manually retrieves the documents at the device. This also eradicates the unclaimed document problem.
6. Disable Every Port and Service You Do Not Use
Check each printer’s open ports—Disable protocols that are not required. Ftp, telnet, and outdated printing protocols are commonly open. Turning off unnecessary ports reduces the number of access vectors.
7. Apply Zero Trust to Your Print Environment
No device or user is trusted implicitly – not even your printers. This implies that access is not assumed to be granted. With regards to printers, this translates to;
- Authentication is verified with every print job.
- Access based on least privilege.
- Behavior verified in real-time.
Gartner has forecast that 60% of enterprises will use the Zero Trust framework as their security foundation by 2026. This should obviously incorporate internal printers to be of any actual value.
8. Train Employees on Secure Print Practices
When technology fails, it’s because users are overriding the systems. Train your users to:
- Remove documents from the printer as soon as they print.
- Utilize secure print release for any sensitive documents.
- Contact an IT staff member about incorrect prints, errors, or changes to printer settings.
- Never send confidential documents to a shared or public printer or a printer in an unsecured environment.
How Managed Print Services Improve Printer Security?
Printers are the trickiest element to manage internally for security. The complexity and labor intensity of printer security stem from managing updates, logs, compliance, and scanning. Over the long term, this is more time than most IT departments can dedicate.
This is where MPS security comes into the picture.
An MPS provider is responsible for your entire print environment and security. Below is the solution a proper MPS provider will offer.
| Service | Security Benefit |
| Automated firmware management | Patches are applied the moment they are released |
| Proactive security audits | Finds printer security vulnerabilities before attackers do |
| Real-time network monitoring | Detects anomalies and flags suspicious behavior immediately |
| Access control configuration | Prevents unauthorized printing across all devices |
| Compliance reporting | Document controls for HIPAA, GDPR, and PCI DSS audits |
| Secure device disposal | Wipes storage and documents the process for compliance |
Security offers enormous benefits for small- to medium-sized businesses. Managed print services offer enterprise-level security. Best of all, the cost of a managed print security service is only a fraction of what an internal security team would cost.
In your search for managed print service providers, be diligent with the security qualifications. Ensure that the organization is ISO 27001 certified. Also, ensure they have a SOC 2 Type II attestation. These are not marketing awards, but a validation that serious security measures are in place.
Click to read our in-depth white paper to find out how managed print services can boost productivity and cut costs.
Printer Security Checklist for Businesses
Go through this checklist for each networked printer in your network. Any unchecked box should be considered a vulnerability open in the network:
Initial Configuration
- Printer default admin password changed to a secure and unique password.
- Printer firmware updated to the latest vendor release.
- Unused printer network ports and protocols are disabled.
- Printer added to its own secure VLAN, isolated from the production network.
- SSL/TLS encryption is enabled for all print traffic.
- HTTPS is forced for the printer’s web administration interface.
Access and Authentication
- User authentication at the device before printing-PIN, Card, or Biometrics.
- Secure pull print is enabled with a secure, encrypted queue.
- Admin privileges are only assigned to designated IT personnel.
- Remote administration access through VPN or SSL, not open on the network.
Ongoing Maintenance
- Printer firmware updates are scheduled quarterly and documented in writing.
- Monthly reviews of print jobs for unusual entries.
- Printer included in SIEM or network monitoring solution.
- Annual employee training session on print security.
End-of-Life
- Internal printer drive securely erased or physically destroyed.
- Printer factory defaults are reset before redeployment or disposal.
- Documentation exists of the disposal process.
What Are the Signs Your Office Printers May Be Compromised?
Printer compromises are silent for a reason. They don’t want you to know they’re on your device, but their presence often announces itself in obvious ways.
1. Spontaneous Print Jobs – The device prints a blank or unexpected page with no one in the room to initiate the job. Attackers often send test print jobs as proof that they have achieved initial compromise of the printer.
2. Unexplained Reboots And Slow Speeds – Malware installed on the printer will consume available resources. A printer must have a constant rate. When it falls quickly, it’s likely because you have increased the load on it or attached new devices. If nothing like this is occurring, a fall in rate must mean there is a fault with it.
3. Unauthorized Outbound Connections – Your printer sends data to an IP address it shouldn’t be sending to. SIEM and network monitoring tools will reveal that the printer is attempting to connect to a suspicious external address. You should immediately inspect all such events.
4. Configuration Changes – If settings can be changed without IT intervention, the device must be considered as potentially compromised. Attackers make these configuration changes because they need something. They need copies of your documents sent directly to their private servers.
5. Consecutive Admin Logon Failures – Frequent, consecutive admin access failures indicate an active brute-force attack.
6. Unidentified Print Log Entries – Print jobs originate from computers or users that shouldn’t have printer access.
Any of the above factors should initiate a security response investigation. First, remove the printer from the network, then check device logs, then notify IT/ Managed Print Services provider.
Future Trends in Printer Cybersecurity
The print security environment is transforming rapidly. Between now and 2030, these issues will be significant.
1. AI-Powered Anomaly Detection
Enterprise printers starting to ship now will come standard with embedded AI that can sense device activity in real time. One aspect is its robust memory anomaly detection. Self-healing reboots are activated to halt attacks before they take hold. This entire feature set is included under HP’s Memory Shield. All business-grade printer lines will eventually contain this capability within a few years.
2. Zero Trust Network Access for Print Devices
As organizations implement Zero Trust, printers without continuous authentication are a critical security vulnerability. Manufacturers are already building ZTNA compatibility into firmware. Organizations that wait will face forced upgrades.
3. Stricter Cloud Print Compliance Requirements
The cloud printing race is picking up speed, and regulation is starting to catch up. Data residency controls will be enforced; sovereignty is key, and encryption standards will apply to every cloud print job. Security is a major concern in cloud printing. According to SAFEQ’s 2026 print security trends report, security is a top concern for 65% of IT professionals. This anxiety will likely increase.
4. Secure-by-Default Out of the Box
Microsoft’s push for a secure-by-default printer configuration in 2024 was indicative of the industry. Fresh out of the box, newer printer models will have security settings enabled by default. While this reduces the window for error, each company is responsible for validating and checking these settings.
5. SIEM Integration as a Baseline Expectation
Printer logs are routed to Security Information and Event Management (SIEM) platforms in accordance with best practices. IT staff will see a unified view of all endpoints (servers, desktops, mobile devices, printers, etc.) within a single dashboard.
Network Digital USA — Securing Every Corner of Your Network.
Every business locks the front door, but most leave the printer unattended.
Printers store data, can serve as points of entry into networks, and, in many businesses, go for years without any security review. It really needs to stop now.
Using this guide, begin by running the checklist. Close off those obvious holes this week: defaults on the print device, missed firmware updates, and unneeded open ports. Next, build processes that ensure the holes stay closed.
If you have other things your IT department needs to do than that, Network Digital USA does.
We work with organizations across the country to protect their print environments. We handle the setup, ongoing monitoring, and compliance documentation. Unprotected printers carry very real risks. These devices have their own operating systems, hard drives, and a network connection.
It is the selection stage where security begins. Let our guide show you how to make the best office printer purchase. The entire network is only as strong as its weakest device, and the printer should not be the one granting access to your business.
To sign up for a free print security assessment, please go to Network Digital.
