Your Wi-Fi Printer Could Be a Security Risk — What Hackers Can Do With Network Printers

You probably protect your laptop with a password.

You keep your phone locked.

You update Windows and install security software.

But what about your printer?

That device sitting quietly in your home or office might be connected to your Wi-Fi network, storing print jobs, exposing an administration interface, and communicating with other devices.

Most people think a printer only does one thing:

Receive a document and print it.

But modern network printers are considerably more complicated. They have firmware, memory, network services, administrative settings, wireless connectivity, and sometimes internal storage.

And just like computers, they can contain vulnerabilities.

A poorly secured printer could expose confidential documents, provide an entry point into a network, or allow unauthorized people to manipulate printing and configuration settings.

Let’s explore what can actually happen and how to secure your printer.

1. Your Printer Is Basically a Small Networked Computer

A modern network printer is not simply a mechanical device.

Depending on the model, it may contain:

• A processor and memory.
• An operating system or embedded firmware.
• Wi-Fi or Ethernet connectivity.
• A web-based administration panel.
• Internal storage or job memory.
• Network printing protocols.
• Firmware update functionality.
• Address books and scan-to-email settings.

When you connect a printer to your home or office network, it becomes another device communicating with your router and other systems.

For example:

             INTERNET
                 |
              ROUTER
                 |
       +---------+---------+
       |         |         |
       v         v         v
     LAPTOP    PHONE    PRINTER
                           |
                     Print Jobs
                     Scan Data
                     Settings

If the printer is poorly configured, it can introduce unnecessary security risks.

This doesn’t mean every network printer is vulnerable. It means printers deserve the same basic security attention as other connected devices.

2. Can Someone Access Documents You Have Printed?

Potentially, yes.

Some printers temporarily retain information about print jobs.

Depending on the printer model and configuration, this information may be stored in:

• Temporary memory.
• Print queues.
• Internal storage.
• Job-history records.
• Document-management systems.

Consider an office printer used to print:

• Employee salary information.
• Bank statements.
• Customer invoices.
• Medical documents.
• Business contracts.
• Internal company reports.

If the printer retains job data or provides access to sensitive job information, an attacker who compromises the device or its management system may be able to expose information.

However, don’t assume every printer permanently stores complete copies of everything printed. Many ordinary printers use temporary memory and discard job data after processing.

The actual behavior depends on the hardware, storage configuration, and software.

Security tip: Check whether your printer supports secure print, job deletion, encrypted storage, or automatic storage wiping.

3. The Printer’s Admin Panel Could Be an Easy Target

Many network printers have a web-based administration interface.

You can usually access it by entering the printer’s local IP address into a browser.

For example:

http://192.168.1.100

The exact address depends on your network.

The administration interface may allow authorized users to:

• Change network settings.
• Configure Wi-Fi.
• Manage printing protocols.
• Set administrator credentials.
• Configure scan-to-email.
• Update firmware.
• Review device information.
• Manage access permissions.

Now imagine the printer still uses a default administrator password.

Or the administration interface is accessible to everyone on the office network.

If an attacker can reach it and exploit weak credentials or a vulnerability, they may be able to modify printer settings or access information.

What to do:

1. Find your printer’s official administration interface.
2. Change the default administrator password.
3. Use a strong, unique password.
4. Disable unnecessary remote-management features.
5. Restrict administrative access to trusted users or devices.

Don’t assume the Wi-Fi password also protects the printer’s administrator account. These are separate security controls.

4. Exposed Printing Services Can Increase Your Attack Surface

Network printers use different protocols to receive print jobs.

Common examples include:

Protocol	Typical purpose
IPP	Internet Printing Protocol
IPPS	IPP over encrypted transport
LPD/LPR	Line Printer Daemon protocol
RAW/JetDirect	Direct network printing, commonly associated with TCP port 9100
SMB	Network file and printer sharing

These services are useful, but unnecessary exposure can create risk.

For example, a printer configured to accept print jobs from an unnecessarily broad network may allow unwanted users or devices to send documents to it.

A poorly secured printing service may also contain vulnerabilities that attackers can investigate.

This is especially important in organizations where printers are connected to internal business networks.

Protection:

• Disable printing protocols you don’t use.
• Restrict access to trusted network segments.
• Avoid exposing printer services directly to the internet.
• Use encrypted printing protocols where supported.
• Keep firmware updated.

Don’t randomly disable services without checking which ones your devices and applications require.

5. Can Hackers Use a Printer to Attack Other Devices?

This is one of the more interesting security risks.

Imagine an office network containing:

• Employee laptops.
• File servers.
• Workstations.
• Network storage.
• Printers.
• Security cameras.

If an attacker compromises a vulnerable printer, they may attempt to use it as a foothold for investigating other reachable devices.

This is related to a concept called lateral movement.

Lateral movement means an attacker attempts to move from one compromised system to another within a network.

For example:

       COMPROMISED PRINTER
                |
                v
       NETWORK DISCOVERY
                |
                v
       IDENTIFY REACHABLE
          DEVICES
                |
                v
       ATTEMPT TO EXPLOIT
        OTHER WEAK SYSTEMS
                |
                v
       POTENTIAL NETWORK
          COMPROMISE

This is not automatic.

A printer compromise does not grant unrestricted access to every computer on the network. Network segmentation, firewall rules, authentication, and device security can limit what an attacker can reach.

But the risk explains why printers should not automatically be trusted just because they are manufactured by established companies.

6. The Danger of Old Printer Firmware

Your laptop receives operating-system updates.

Your phone receives security patches.

But when did you last update your printer?

Many people install a printer once and never check its firmware again.

That can become a problem.

Printer firmware may contain vulnerabilities involving:

• Network communication.
• Authentication.
• Web administration.
• Document processing.
• Wireless connectivity.
• File handling.
• Remote management.

If a manufacturer releases a security update, it may fix vulnerabilities that could otherwise be exploited.

An old printer that no longer receives updates can become difficult to secure.

What to check:

1. Identify the printer’s exact model.
2. Visit the manufacturer’s official support website.
3. Check the available firmware version.
4. Read the release notes and security advisories.
5. Install updates using the manufacturer’s recommended process.

If the manufacturer has ended security support, consider replacing the printer if it handles sensitive documents or operates on an important network.

7. Can Someone Print Documents Without Your Permission?

Yes, if they can access a printer’s printing services or an authorized computer or account.

For example, an unsecured office printer might accept print jobs from users who should not have access.

This can lead to:

• Unwanted pages being printed.
• Confidential documents appearing in shared output trays.
• Printer resources being abused.
• Paper and toner wastage.
• Disruption to normal printing operations.

In an office, the problem isn’t always a sophisticated hacker.

Sometimes the printer is simply configured to accept jobs from too many devices.

Protection:

• Restrict printer access to authorized users.
• Use user authentication if available.
• Separate guest Wi-Fi from the business printing network.
• Secure print queues.
• Avoid leaving confidential printouts unattended.

8. Your Printer’s Scan-to-Email Feature Can Expose Sensitive Information

Many multifunction printers can scan documents and send them through email.

This is convenient for offices and businesses.

However, the feature requires configuration involving email accounts, server settings, and sometimes stored credentials.

If those settings are poorly protected, they may create additional risks.

For example:

• An administrator password may be weak.
• An email account may have excessive permissions.
• An outdated authentication method may remain enabled.
• Scan destinations may be accessible to unauthorized users.
• Email credentials may be stored insecurely.

Imagine a printer configured to send scanned documents to a shared mailbox.

If an attacker compromises the printer’s administration interface, they might attempt to change scan destinations or misuse the configured email functionality.

The exact impact depends on the printer’s design and security controls.

Protection:

• Use a dedicated email account for scanning.
• Give it only the permissions it needs.
• Use supported modern authentication methods.
• Restrict access to scan destinations.
• Protect printer administrator credentials.
• Review scan-to-email settings periodically.

Never configure a printer using your primary personal email password if a safer dedicated configuration is available.

9. Public Printers Are a Privacy Risk Too

You don’t need a hacker to create a document-security problem.

Think about printing at:

• Internet cafés.
• Photocopy shops.
• Libraries.
• Colleges.
• Shared office spaces.
• Public business centres.

You might send a document containing personal information to a printer controlled by someone else.

Depending on the service and its setup, documents may pass through a shared computer, print server, application, or queue.

Potential risks include:

• Accidentally printing to the wrong device.
• Leaving documents in the output tray.
• Documents remaining in a shared print queue.
• Untrusted staff accessing confidential paperwork.
• Copies being retained longer than expected.

If you’re printing something sensitive, use a trusted printing service.

Collect your pages immediately and check that you haven’t left additional copies behind.

For highly confidential documents, consider whether using a public printing service is appropriate at all.

10. Could a Printer Leak Information About Your Network?

Yes.

Printers can expose technical information through network services and management interfaces.

Depending on their configuration, an accessible printer may reveal:

• Manufacturer and model.
• Firmware version.
• Device hostname.
• Network configuration.
• Supported protocols.
• Service information.
• Administrative interface details.

Why does that matter?

Because attackers use reconnaissance to understand the systems they might target.

A printer revealing its model and firmware version could help an attacker determine whether known security advisories apply.

This is why unnecessary network services should be disabled and administrative access restricted.

Remember, discovering a printer’s model doesn’t mean the device has been hacked. It simply provides information that may help someone assess its security.

11. How to Secure Your Home or Office Printer

Now let’s get practical.

You don’t need to be a network engineer to improve printer security.

Step 1: Change the Default Administrator Password

Open the printer’s official settings interface.

Find the administrator or security section.

Change the default password to a strong, unique credential.

Don’t reuse your Wi-Fi password.

Step 2: Update Printer Firmware

Visit the manufacturer’s official website and check for updates.

Avoid firmware files from random websites.

Step 3: Disable Unused Network Services

If your printer supports several printing protocols, keep only the ones you actually need.

For example, an office may not need legacy printing services that were enabled during initial setup.

Step 4: Disable Unnecessary Remote Administration

If you don’t manage the printer remotely, disable remote management where supported.

Its administration interface should not be unnecessarily exposed to the internet.

Step 5: Secure Wi-Fi Connectivity

Use modern Wi-Fi security, such as WPA2-AES or WPA3 where supported.

Avoid connecting printers to open or untrusted wireless networks.

Step 6: Create a Separate Network for Printers

For businesses and advanced home networks, consider placing printers on a separate network or VLAN.

This can limit unnecessary communication between printers and sensitive computers.

However, configure firewall rules carefully so authorized users can still print.

Step 7: Enable Secure Printing

If supported, use features such as:

• PIN-protected printing.
• User authentication.
• Secure print release.
• Encrypted job transmission.
• Automatic deletion of stored jobs.

Step 8: Review Printer Access

Check which devices and users can send print jobs.

Remove access that is no longer required.

Step 9: Secure the Physical Device

Don’t leave the printer in an unrestricted public area if it handles confidential documents.

Protect control panels and physical storage access.

Step 10: Replace Unsupported Printers

If the manufacturer no longer provides security updates, assess whether the device should be replaced.

A printer that works perfectly can still be a security liability if its firmware is no longer supported.

12. How to Check Your Printer’s Security on Windows

If you use Windows, start with these basic checks.

Find the printer’s IP address:

1. Open Settings.
2. Go to Bluetooth & devices.
3. Select Printers & scanners.
4. Select your printer.
5. Open Printer properties or the device’s available settings.
6. Check the manufacturer’s documentation if the IP address isn’t displayed.

You can also check the connected-device list in your router’s administration interface.

Open the printer’s local management page:

If the printer supports a web interface, enter its local IP address into your browser.

For example:

http://192.168.1.100

Only do this for your own printer or one you’re authorized to administer.

If the page opens, review:

• Administrator credentials.
• Firmware information.
• Network services.
• Wireless security.
• Remote management.
• Scan destinations.
• Access controls.

Don’t assume that every printer uses the same menu names or configuration options.

13. Printer Security Checklist

Use this checklist to audit your printer.

Security check	Recommended action
Default admin password	Change it
Firmware	Keep updated
Wi-Fi security	Use WPA2-AES or WPA3
Remote administration	Disable if unnecessary
Printing protocols	Disable unused services
Public internet exposure	Avoid direct exposure
Scan-to-email	Secure account and settings
Stored print jobs	Review retention and deletion
Printer access	Restrict to authorized users
Network placement	Segment where practical
Physical access	Protect confidential output
Manufacturer support	Check end-of-life status

Frequently Asked Questions

Can someone hack my printer through Wi-Fi?

Potentially. A vulnerable or poorly configured network printer may be attacked by someone who can reach its services. Strong authentication, firmware updates, and network restrictions reduce the risk.

Can a printer store copies of printed documents?

Some printers temporarily retain job data, and certain models have internal storage or job-history features. Others discard data after processing. Check the specifications and security settings for your particular model.

Can hackers use a printer to access my computer?

A compromised printer may provide a foothold for further network attacks if other devices are reachable and vulnerable. It does not automatically grant access to every computer.

Is it safe to connect a printer to public Wi-Fi?

It is generally better to avoid connecting a printer to an untrusted public network. If you need to print in a shared environment, use the provider’s intended printing system and avoid exposing your personal printer.

Should I leave my printer connected to Wi-Fi all the time?

You can, provided it is properly secured and supported. If you rarely use wireless printing, disabling the wireless connection when unnecessary can reduce its exposure.

Can someone see what I print?

Depending on the printer, print server, network configuration, and access controls, administrators or other authorized systems may have access to job information. Ordinary network observers do not automatically get to read the full contents of every print job.

Does antivirus protect my printer?

Traditional antivirus software on your laptop does not automatically secure printer firmware or administration settings. Printer security requires firmware updates, strong credentials, restricted services, and appropriate network controls.

Are home printers safer than office printers?

Not necessarily. Home printers may have weaker administration practices, while office printers may handle more sensitive information and be connected to larger networks. Security depends on the model, configuration, and maintenance.

Final Thoughts

Your printer might be the least exciting device in your home or office.

But it is still a connected device.

It can communicate with your network, receive documents, process sensitive information, and expose administrative services.

That makes it part of your cybersecurity environment.

You don’t need to disconnect every printer or become paranoid about printing a document.

Just stop treating printers as harmless accessories.

Change the default credentials, update firmware, disable unnecessary services, restrict access, and think carefully about what information passes through the device.

Your laptop isn’t the only device worth protecting. Sometimes the weakest link is the machine you only remember when you need to print something.

Think Like a Hacker. Defend Like a Pro.