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Is Your Printer a Security Risk? How to Protect Your Network

Is Your Printer a Security Risk? How to Protect Your Network

When you think about cybersecurity, you probably worry about your laptop, your phone, maybe even your smart TV. But what about your printer? Most people don’t realize that modern network printers are essentially small computers, complete with processors, memory, and network connections. And just like any computer, they can be hacked.

We are an online manual resource,  we help users configure and troubleshoot their devices daily. We understand that printer security is often overlooked, creating an easy entry point for attackers onto your home or business network. We’ll explain the real printer security risks and provide 5 simple, actionable steps you can take today to lock down your printer.

Why Hack a Printer? The Surprising Risks

Why would anyone want to hack a humble printer? Because it’s often the “weakest link” on your network, rarely updated and often protected by weak default passwords. Hackers can exploit this in several ways:

  1. Gaining Network Access. Once inside your printer, attackers can potentially use it as a jumping-off point to access other, more valuable devices on your Wi-Fi network, like your computers, NAS drives, or security cameras.
  2. Stealing Sensitive Data. Many Multi-Function Printers (MFPs) have internal hard drives or memory that store copies of documents you’ve recently scanned or printed. Think tax forms, contracts, or personal IDs. A hacker could potentially access this stored data.
  3. Eavesdropping on Print Jobs. If your print jobs are sent over an unsecured network connection, they could theoretically be intercepted.
  4. Using Your Printer for Attacks. Hackers can add your printer to a “botnet” – a network of compromised devices used to send massive amounts of spam email, launch Distributed Denial of Service (DDoS) attacks against websites, or even mine cryptocurrency, consuming your electricity.
  5. Phishing and Ransomware. Attackers might take control of your printer’s display screen to show fake error messages demanding payment (ransomware) or directing you to malicious websites (phishing).

5 Essential Steps to Secure Your Printer

The good news is that securing your printer isn’t complicated. Taking these basic steps dramatically reduces your risk.

Step 1.  Change the Default Admin Password. This is the single most important step. Nearly all printers ship from the factory with a default administrator password, often something simple like “admin,” “password,” “123456,” or even blank (no password). Hackers know these defaults!

  • How to Change It:
    1. Find your printer’s IP address. You can usually find this by printing a Network Configuration Page from the printer’s settings menu.
    2. Open a web browser on your computer (like Chrome or Edge) and type that IP address into the address bar (e.g., 192.168.1.15).
    3. This will open the printer’s Embedded Web Server (EWS) – basically, its internal website.
    4. You’ll be prompted to log in. Use the default password (check your manual if unsure).
    5. Navigate to the “Security,” “Administrator,” or “Network” settings tab.
    6. Find the option to “Change Administrator Password” and set a strong, unique password that you’ll remember.

Step 2.  Keep Your Printer Firmware Updated Firmware is the printer’s internal operating system. Just like Windows or macOS, manufacturers regularly release firmware updates to fix bugs and patch security vulnerabilities hackers have discovered.

  • How to Update:
    1. On your printer’s touchscreen or menu, go to “Settings,” “Tools,” or “Printer Update.”
    2. Look for an option like “Check for Updates” or “Update Firmware.”
    3. If possible, enable “Auto Update” so the printer handles this automatically.

Step 3.  Secure Your Wireless Connection Your printer’s connection is only as safe as your overall Wi-Fi network.

  • Ensure your router is using strong encryption – WPA2 is the minimum standard; WPA3 is even better. Avoid the outdated and insecure WEP protocol.
  • Use a strong, unique password for your Wi-Fi network itself.
  • Advanced Tip: If your router supports guest networks, consider putting your printer on the guest network. This isolates it from your main computers and sensitive files. [Link to: How to Connect a Wireless Printer]

Step 4. Disable Unused Services and Protocols Modern printers come loaded with network features you might never use, such as AirPrint, Wi-Fi Direct, IPP printing, FTP, Telnet, SNMP, etc. Every enabled service is another potential door for hackers.

  • How to Disable:
    1. Access the printer’s EWS using its IP address (as in Step 1).
    2. Navigate to “Network Settings,” “Protocols,” or “Advanced Settings.”
    3. Carefully review the list of enabled services. Disable anything you don’t recognize or definitely don’t need (especially older protocols like FTP and Telnet). If unsure, consult your manual first.

Step 5. Use Secure Printing Features (If Available) If you often print sensitive documents (like HR records or financial reports), look for these features:

  • “PIN to Print” / “Secure Print”: When you send the print job, you set a PIN code. The job is held securely on the printer until you walk up to it and enter that PIN. This prevents confidential documents from sitting unattended in the output tray for anyone to see. Check your printer driver settings on your computer for this option.

Advanced Tip – Check Stored Data on MFPs

If you have a larger Multi-Function Printer (MFP), especially one with a built-in hard drive, it might be storing copies of documents you’ve scanned or copied.

  • Check the printer’s EWS or settings menu for options like “Encrypt Hard Drive” or “Job Overwrite / Data Erase.” Enabling these adds a significant layer of protection for stored data.

 Answers to Your Top Questions (FAQ)

  • Q: Can my printer get a virus?
    • A: While traditional PC viruses aren’t common, printers absolutely can be infected with malware or ransomware that exploits security holes in their firmware. Keeping the firmware updated (Step 2) is your best line of defense.
  • Q: Is printing from my phone secure?
    • A: If your phone and printer are both connected to your secure WPA2/WPA3 Wi-Fi network, it’s generally safe. Using Wi-Fi Direct (a direct connection bypassing the router) can be less secure if you haven’t set a strong password for that direct connection.
  • Q: My printer is old. Is it still a security risk?
    • A: Yes, potentially even more so. Older printers often stop receiving firmware updates, meaning known security flaws remain unpatched forever. Even if it’s old, if it connects to your network, you absolutely must change the default password. Learn more about common printer problems.

 Still Having Issues? Your Next Steps

Securing your printer is a crucial step in protecting your overall network. If you’re having trouble accessing your printer’s settings, finding the firmware update option, or configuring advanced features, your official user manual is the definitive resource. It will provide model-specific instructions and diagrams for navigating the menus and securing your device.