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Is Your Printer The Biggest Security Threat In Your Office?

May 19, 2025

When you think of major cybersecurity threats in your workplace, you likely consider phishing emails, malware, or weak passwords. But did you know that your office printer — that quiet machine in the corner — could be one of the most overlooked vulnerabilities in your entire network?

It may sound surprising, but hackers actively target printers. Many companies underestimate the security risks these devices pose — often with costly consequences. In 2020, Cybernews conducted their "Printer Hack Experiment," compromising 56% of 50,000 tested printers. That’s nearly 28,000 devices hijacked to print warnings about printer security — all because businesses ignored this seemingly harmless office tool.

Why Are Printers Such a Prime Target?

Because printers hold a treasure trove of confidential information. They handle everything from payroll and contracts to sensitive client data — yet many organizations leave them vulnerable to attack.

Here’s what can happen if a hacker gains control of your printer:

Printers store sensitive files — Every document you print, scan, or copy is often saved digitally. Many printers come with built-in hard drives that retain years of documents, including payroll, contracts, and employee records. If breached, hackers can steal or reprint confidential files without your knowledge.

Default passwords invite hackers — Most printers ship with default admin credentials like "admin/admin" or "123456". Many organizations never change these, making it extremely easy for attackers to seize control.

They provide a gateway into your network — Connected to your WiFi and company network, compromised printers can serve as entry points for malware, ransomware, or data theft from other devices.

Print jobs can be intercepted — Without encryption, hackers can intercept documents before they even reach the printer, exposing confidential contracts, legal files, and medical records.

They can spy on your business — Modern printers often include storage and scan-to-email features. A compromised device lets hackers remotely access scanned documents, emails, and stored files.

Outdated firmware creates vulnerabilities — Like any tech, printers require regular security updates. Many businesses neglect firmware updates, leaving devices open to known exploits.

Data risks from discarded printers — Improperly discarded printers can retain sensitive residual data, providing cybercriminals with valuable information. To avoid breaches and legal troubles, always wipe printer storage before disposal.

How to Safeguard Your Printers Against Cyber Attacks

Now that you understand the risks, take these essential steps to protect your printers immediately:

  1. Change Default Passwords — Replace factory login credentials with strong, unique passwords just as you would for your email or banking accounts.

  2. Update Firmware Regularly — Manufacturers release security patches for a reason. Check your printer settings for updates or have your IT team handle them promptly.

  3. Encrypt Print Jobs — Activate Secure Print and end-to-end encryption to block hackers from intercepting sensitive documents.

  4. Restrict Printing Access — Implement access controls so only authorized staff can print. Use PIN codes for sensitive jobs and create guest printing options if needed.

  5. Clear Stored Data Frequently — Manually delete stored print jobs when possible. Ensure any printer hard drives are encrypted, and always wipe or destroy drives before disposing of printers.

  6. Secure Printers Behind Firewalls — Protect printers with firewalls just like your computers to block unauthorized access.

  7. Monitor Printer Activity — Have your IT team track printer logs to detect unusual print jobs, remote access attempts, or unauthorized users handling sensitive documents.

Printers Are More Than Office Tools — They’re Critical Security Points

Many businesses overlook printer security simply because they see printers as harmless office equipment. Cybercriminals, however, know these devices are often neglected and easy targets.

If you’re securing your computers but ignoring your printers, you’re leaving a significant gap in your cybersecurity defenses.

Wondering if your office printers are truly secure? Take advantage of a FREE 10-Minute Discovery Call with us — we’ll identify vulnerabilities and ensure your printers and entire network are fully protected.

Click here or call us at (949) 537-2909 to schedule your FREE 10-Minute Discovery Call today!