Cyber security

How can you improve your business’s network printer security?

12 August 2022

A printer is a staple piece of equipment in the office. They sit relatively quietly in a corner of our offices. And are the backdrop for office gossip or mid-morning catch-ups with colleagues. But did you know that printers are an overlooked cyber security risk?

Printers are the one piece of office tech whose presence is typically neglected from a business’s cyber security strategy.

What impact can this have and how can your business mitigate this risk?

When multi-function printers (MFPs) are overlooked or left out of an IT strategy, they are vulnerable to a cyber-attack.

Printers can be used as an entry point to a network, and are able to be exploited by hackers. This entry point could allow unauthorised access to your business’s network and data.

That’s why it is imperative that you strengthen your printers’ network security and start building cyber resilience. You can do this by carrying out regular audits for breach risk prevention planning.

As a business owner or IT manager, you must ensure business data is secure and that all your IT systems are protected against any cyber-threats. So how can you ensure that your office printer isn’t letting the team down?

Why are printers vulnerable to cyber-attacks?

Let’s first take a look at why office printers are vulnerable to attack, then address the business risks and finally, how to secure a network printer to protect your business.

To begin with, we’ll delve a little deeper into why printers are targeted by cybercriminals.

Their purpose: to print & scan important documents

We’re stating the obvious as the primary function of a printer (to print and scan documents) is its most vulnerable aspect. Every day, printers are scanning and printing documents that may contain sensitive or confidential company information, making them an attractive gateway piece of hardware for cybercriminals to gain access to.

Printers receive all types of documentation, from financial statements to tax forms and HR documents with medical information, employee data and more. With all this confidential data available on a printer system, if the necessary printer security measures and precautions have not been taken, it makes it easy for hackers to intercept and access the information.

A printer’s internal hard drive stores information

Did you know that the internal hard drive on your multi-function printer (MFP) stores previous print job information?

Data stored on the internal printer hard drive means that any savvy cybercriminal would be able to hack into the printer’s operating system (OS) and view the documents.

If there are any queued documents, these are also stored on the built-in hard drive, meaning that copies can be retained – even when the printer has been turned off.

It’s a gamble as to whether or not the stored hard drive data holds confidential or sensitive information, but the likelihood is high in the favour that it does. If accessed, it could prove detrimental for a business with potentially confidential information able to be viewed, shared and more.

To prevent printer hard drive data from becoming an issue, it is best to wipe them and ensure there isn’t a data security breach. This is particularly important if the printer is moving locations or office buildings.

Wireless print transmissions can be intercepted

At any time during the work day, potentially sensitive or confidential data is being sent to a printer within the office or remotely.

If a printer becomes compromised or it is connected to a network that is not secure, then these digital files can be intercepted, rerouted, viewed and even printed off at a completely different location. All of which could happen without your knowledge.

As documents can be intercepted wirelessly, this incentivises inception as a method of access for hackers as they’re able to gain access effortlessly.

Printing via a third party, mobile device or remote access; these can be controlled

Sometimes a business or employee may use third party administration, mobile device or remote control via a website to print. These methods for printing can open up multiple entry points for hackers to access your system.

If this these remote controls and third parties are not properly secured, then they can be taken control of by an unauthorised person or cybercriminal. When they have seized control, they would be able to access and manage the printer from a remote location. From here, they’d be able to cause issues for your business.

We’ve discussed the different vulnerabilities of a printer and how it can become a target or gateway for cyber-attacks. But what if you’re too late to implement network printer security? What security risks and impact can this have for your business?

Next, we’ll talk about how detrimental this access point can be for your organisation, if left unprotected.


cartoon style printer


What are the top printer security risks to your business?

The main printer security risks to your business are theft, printer attacks, network vulnerability and data breaches.

  • Internal and external unauthorised access to sensitive information

When documents are printed in the office, many are never retrieved, or they are left for hours sitting at the printer. This can lead to the documents being vulnerable to document theft or prying eyes - all of which pose an internal data security breach.

As we’ve discussed, it is not only internal security breaches that pose a threat, but also when a hacker gains unauthorised access to a printer due to security vulnerabilities. External persons would then be able to view or leak confidential business information.

  • Data security breaches

MFPs are, in a sense, small computers that, without proper security measures in place, can lead to data being exposed through the network either by cable or wirelessly.

Similar to computer, MFPs store data. This means that if a printer is moved from one location or business to another, or it is used between companies, then temporary data may remain on the printer and become exposed, causing a breach in company data security.

  • Settings changed without authority
    When a cybercriminal gains access to your network via a printer vulnerability, they may begin to make changes to your IT systems or settings without consent. This could cause serious issues for your business operations.
  • Potential eavesdropping on network printer traffic
    When a printer has been compromised, a hacker could use this entry point to your network as an opportunity to eavesdrop on the printer traffic.

By now, you’re well aware of why your printer is vulnerable and the risks involved. So how do you change that and ensure that your printer is well protected?

How to secure a network printer to protect your business from cyber-threats…

Wondering how to secure a network printer? There are a number of different steps that you can take to ensure your business is secure against printer vulnerabilities.

  • Carry out regular printer security audits, creating a risk prevention strategy that includes them
  • Impose limits on network printing by configuring the settings so that your office printer only responds to commands made from the network router
  • Make sure to secure the printer ports by turning off any unused protocols and/ or services
  • Take the decision to invest in print management software, enabling your business to track who is using the printers, and crucially, how they are using them
  • Encrypt the printer data so that it won’t be of any value if it were to become accessible to an unauthorised person
  • Make sure that the printer has any manufacturer’s updates for the software and hardware installed as soon as it becomes available. Manufacturer updates may contain fixes for identified security risks, without which you leave your printer vulnerable
  • Ensure that any printers used by your business use a two/multi-factor authentication (MFA); as this means that users have to identify themselves in order to receive a print job in the print queue. This is important for addressing both internal and external security threats, as sadly, it is not just cybercriminals that jeopardise office printer security. A multi-factor authentication will limit access to digital files, restricting access to printed documents
  • Remaining vigilant and wiping the data storage hard drive on a printer, especially when removing or moving a printer from your office premises
  • Make sure that your office printers all have the latest security software installed on them, and that they are fully up-to-date

Worried about your office printer’s security? Contact Bluecube today

At Bluecube we provide Managed IT Support Services to a wide range of businesses, across a variety of different sectors from legal to non-profit and much more. We assess your IT estate, making sure that your infrastructure is secure, safe and runs smoothly – this includes taking a look at your multi-function printers!

Please don’t hesitate to give us a call on 0845 257 8010, fill out our online contact form, or drop us an email via, and one of our team will be in touch.