Printer Security for Idaho Businesses: The Device Most Companies Forget to Protect

Your printer is a networked computer. It has an operating system, an IP address, storage that retains copies of documents you've printed, and in most offices, direct access to the rest of your network.

Most businesses treat it like an appliance.

That gap — between what a printer actually is and how it's managed — is exactly what attackers look for. This isn't theoretical: over 800,000 printers were found exposed to the internet in a single research sweep. For businesses printing sensitive material — engineering plans, financial records, healthcare documents, supplier contracts — a compromised printer can mean data exposure before anyone realizes there's a problem.

Here's how to actually address it.

Start with the basics: configuration and access

The majority of printers ship with default administrator credentials that are publicly documented. Change them. This takes five minutes and closes the most obvious entry point. Store the credentials in your password manager alongside everything else.

Next, review what your printer can actually reach on the network. Most networked printers and multifunction devices don't need access to your file server, production systems, or accounting software — but they often have it by default. Restricting that access through network segmentation (more on this below) is the single most impactful thing you can do for printer security.

Keep firmware current

Printer manufacturers release firmware updates to patch known vulnerabilities, just like Microsoft patches Windows. The difference is most businesses never apply them. Set a reminder to check for printer firmware updates quarterly. If you're managing a fleet of devices, your IT team should be including printers in the same patch cycle as everything else.

An end-of-life printer — one the manufacturer no longer supports — is a liability. No more firmware updates means known vulnerabilities accumulate with no fix coming. Plan for printer replacement on the same lifecycle logic you'd apply to any other networked device.

Segment your printer network

Printers should live on their own VLAN, isolated from your critical business systems. If an attacker compromises a printer on a flat network, they can use it as a stepping stone to everything else. A printer on its own VLAN can still do its job, but a breach there doesn't become a breach everywhere.

For manufacturers running operational technology — SCADA systems, production equipment — this is especially important. You don't want a networked MFP on the same segment as your production floor systems.

Encrypt what goes to and from the printer

When a print job travels from a computer to a printer across a network, that data can be intercepted. Use encrypted print protocols (TLS) and ensure the printer's internal storage is encrypted. Many modern business-grade printers support this natively — it just needs to be enabled.

Also: that print queue isn't as temporary as it seems. Documents often remain stored on the printer's hard drive after printing. Configure your devices to purge the queue automatically, and when you retire a printer, treat the hard drive like you would a decommissioned server — wipe or physically destroy it.

Use a real firewall

A $39 Netgear router from Walmart is not a business firewall. It will not protect your network, and you cannot get cyber insurance with one. A business-grade firewall monitors and controls traffic at the network perimeter, including traffic to and from your printers. If your office doesn't have one, this is the foundational fix everything else depends on.

Run regular vulnerability scans

Your network configuration today isn't your network configuration in six months. New devices get added. Settings drift. A printer that someone connected for a temporary job gets forgotten and stays on the network indefinitely. Regular vulnerability scanning surfaces these issues before attackers find them first.

Don't overlook the physical side

Sensitive documents sitting in a print tray are a data exposure risk. In healthcare environments this is a HIPAA concern — patient information left on a printer is a violation whether it was printed intentionally or by accident. In any environment handling confidential information, the policy should be simple: retrieve what you print, and shred what you don't need.

A note for compliance-driven businesses

If you're pursuing CMMC, working toward cyber insurance, or operating under HIPAA, printer security will come up. CUI printed on an unmanaged device in an unsegmented network is a compliance issue. Healthcare organizations printing PHI need physical and technical controls in place. Cyber insurers are increasingly asking about endpoint coverage that includes printers and other networked peripherals.

Printers are easy to overlook because they mostly just work. That reliability is also why they're attractive targets — they're on the network, they're often forgotten, and they hold more data than most people realize.

At TotalCare IT, printer security is part of how we approach network management for businesses in Boise and Idaho Falls. If you're not sure where your printers stand, let's talk.