It’s easy to think of your HP printer as a simple device that just puts ink on paper. But in reality, your printer isn’t just a printer; it’s a sophisticated, network-connected computer with its own operating system, memory, and sometimes even a hard drive. Because it’s connected to your network, it’s a target. Hackers know that printers are often the most overlooked and unsecured devices on a network.
This guide will cover the most significant security risks associated with your printer and provide a step-by-step guide to locking it down. A secure printer starts with a correct setup. If you’re setting up a new device, you can start with our HP Printer Setup Guide.
Why Your Printer is an Overlooked Security Target
Think of your printer as an “unlocked back door” into your home or office network. You’ve locked your PCs and secured your Wi-Fi, but that printer in the corner is open and connected.
- It has network access: If a hacker can gain control of your printer, they are inside your firewall. From there, they can try to attack your PCs, servers, and other smart devices.
- It stores data: Many HP printers, especially OfficeJet and LaserJet models, have internal memory or hard drives that cache copies of the documents you’ve recently printed, scanned, or copied.
- It has an OS: Just like Windows or macOS, your printer’s firmware can have vulnerabilities. Hackers can exploit these to take control of the device.
The Top 5 HP Printer Security Risks
1. Data & Document Theft
Hackers can intercept print jobs sent over an unsecured Wi-Fi network, known as a “man-in-the-middle” attack. Even more simply, if they gain access to the printer’s internal web page, they can often view stored faxes or find cached copies of sensitive documents on the printer’s hard drive.
2. Unauthorized Network Access
This is the single biggest risk. The printer is used as a “pivot point.” An attacker compromises the printer and then uses it as a trusted device inside your network to launch attacks against more valuable targets, like your computer or a file server, that would normally be protected by your router’s firewall.
3. Malware & Botnet Attacks
Yes, your printer can get a virus. A hacked printer can be infected with malware, which can then try to spread to other devices on your network. It can also be forced to join a “botnet,” where it’s used along with thousands of other hacked devices in large-scale cyberattacks without your knowledge.
4. Denial of Service (DoS)
A less sophisticated but still damaging attack. An attacker can send thousands of junk print jobs to your printer, causing it to print endless pages of gibberish. This wastes all your paper and expensive toner/ink and makes the device completely unusable until it’s cleared.
5. Data Theft from Discarded Printers
When you throw away or sell an old printer, are you giving away your data? If you don’t properly wipe its hard drive, you could be handing over copies of every sensitive document you’ve ever printed, from tax forms to business contracts.
How to Secure Your HP Printer – A Step-by-Step Guide
Step 1: Update Your Firmware (The Most Important Step)
Firmware is the operating system of your printer. Just like you update Windows or your smartphone, you must update your printer. HP regularly releases firmware updates that patch the security holes hackers use to attack.
- How: You can almost always do this from the printer’s built-in screen. Look for Settings > Printer Maintenance > Update the Printer. Enable “auto-updates” if the option is available.
- You can also find the latest firmware and drivers in our HP Printer Drivers and Software guide.
Step 2: Change the Default Administrator Password
Every network printer has a built-in control panel, known as an “Embedded Web Server.” You access it by typing the printer’s IP address into a web browser. Hackers know the default usernames and passwords, like “admin” or just being blank. Change this immediately to a strong, unique password.
Step 3: Secure Your Network
- Wi-Fi: Ensure your printer is connected to a secure Wi-Fi network using WPA2 or WPA3 encryption. Never connect it to an “open” or “guest” network.
- For Businesses: Put the printer on its own separate network, known as a VLAN. This way, even if it is compromised, it can’t “see” or attack your critical computers and servers.
Step 4: Disable Unused Services
In the printer’s web settings from Step 2, go to the “Network” or “Security” tab. Turn off old, unsecured protocols you don’t use, such as FTP, Telnet, and ePrint if you’re not using it.
Step 5: Use “Secure Print”
Many HP printers have a feature called “Secure Print” or “Private Pickup.” This holds your print job until you physically walk up to the printer and enter a PIN. This is a simple, physical way to prevent sensitive documents from being stolen right from the output tray.
Frequently Asked Questions (FAQ)
Yes. Any device connected to your network is a potential target. Printers are especially common targets because people forget to update their firmware and change default passwords.
Find your printer's IP address from its network settings menu. Type that IP address into a web browser on your computer. This will open the Embedded Web Server. Look for a "Settings" or "Security" tab to find the option to set an administrator password.
Yes. A direct USB-only connection is not exposed to network attacks. However, it's far less convenient, and you lose all mobile and app printing features.
This warning usually means you haven't set an administrator password. Follow Step 2 above. Follow the app's prompts to create one, or do it manually through the web interface. If the app is glitchy, see our Troubleshooting HP Smart App guide.
Look in the printer's settings menu on its screen for "Settings" > "Device Maintenance" or "Security." You should find an option for "Factory Reset" or "Secure Erase" that will wipe all your personal data.
Your printer is a computer, so you must treat its security just as seriously. By taking two simple steps—updating your firmware and setting a strong administrator password—you can protect yourself from the vast majority of attacks.
Sometimes, printer problems aren't a hack but a simple glitch. If your printer is acting strangely, you can check our HP Printer Error Codes guide. For model-specific security settings, always refer to the official HP user manuals for your printer.