MFP and printer security: the best-practices guide for regulated fleets.
Every multifunction printer on your network is a computer with a hard drive, a web server, an email client, and default admin credentials. This guide covers the eight controls that harden an MFP fleet, the vulnerability most audits now flag first, and the per-industry requirements for healthcare, banking, education, and auto dealerships.
Why multifunction printer security matters in 2026
A modern MFP runs a full operating system, stores every scanned document on an internal drive, holds LDAP or SMTP credentials for your network, and ships with a web-facing admin panel. The Quocirca Print Security Landscape found 67 percent of organizations suffered a print-related data breach in a single year, while just 16 percent are completely confident in their print security. Attackers treat the printer fleet as the softest computer on the network: rarely patched, rarely monitored, and holding credentials that unlock everything else. Five actively tracked CVEs sit in the scan-to-email path alone. The breakdown is in Five MFP CVEs Every Bank CISO Should Know.
Printer security best practices: the eight controls
These eight controls are the consensus baseline across NIST 800-53, the FFIEC IT Examination Handbook, and every managed-print security assessment we have seen an auditor run. Work them in order.
1. Segment the fleet on its own VLAN
Printers do not need to see workstations, servers, or the internet at large. A dedicated print VLAN with explicit firewall rules limits what a compromised device can reach and makes anomalous traffic obvious.
2. Change default admin credentials and close open services
Default passwords on MFP admin panels are published in vendor manuals. Set unique credentials per device, disable Telnet and FTP, and restrict the web admin panel to the management subnet.
3. Patch firmware on a schedule
MFP firmware carries the same CVE lifecycle as any server OS, but most fleets never patch after installation. Put the fleet in the same monthly patch cadence as your servers. Your MPS provider can automate this.
4. Enforce user authentication at the device
Badge release, PIN codes, or directory login stops walk-up access to stored jobs and scan destinations, and gives every action a named user for the audit log.
5. Encrypt and sanitize the internal hard drive
Every scan, copy, and print job can persist on the MFP drive. Enable drive encryption, enable overwrite-after-job where the vendor supports it, and require certified data destruction at end of lease. A major bank paid 35 million dollars for missing this step at decommissioning. The story is in the audit gap briefing.
6. Block plaintext SMTP at the network edge
Most fleets ship scans over unencrypted port 25. Block outbound port 25 from the print VLAN and force SMTP-AUTH with STARTTLS at the relay as a minimum. This narrows the exposure but does not close it: the message and its attachment still land unencrypted in mailboxes, archives, and backups.
7. Replace scan-to-email transport, not just the relay settings
The scan-to-email path is the one control on this list that device settings cannot fix, because the exposure lives in what happens after the message leaves the relay. End-to-end encrypted transport with per-document access logs is the only configuration that answers all four examiner questions. The full remediation path is in How to fix unencrypted scan-to-email.
8. Log, monitor, and put the fleet in scope
Feed device logs to the SIEM, include printers in vulnerability scans, and put the fleet inside the written information security program. If the WISP never mentions the MFPs, the next assessment will.
The biggest MFP security gap: scan-to-email
Controls 1 through 5 harden the device. Control 6 hardens the first network hop. Neither touches the core problem: scan-to-email sends sensitive documents as plaintext attachments that persist indefinitely in mailboxes, archives, and backups nobody controls. Security assessors, virtual CISOs, and IT examiners have started flagging unencrypted scan-to-email as a named finding because it fails encryption-in-transit requirements under GLBA, HIPAA, FERPA, and the FTC Safeguards Rule at the same time. SecureMFP replaces that path with patented end-to-end encrypted transport in about five minutes per device, with no firmware change and no vendor swap.
Printer security requirements by industry
The eight controls are universal. The regulation that makes them mandatory differs by industry, and so does the assessor who checks.
Healthcare: HIPAA printer security
The HIPAA Security Rule transmission-security standard at 164.312(e)(1) applies to every scan of patient information leaving an MFP. Covered entities and business associates both carry the obligation. Start with healthcare MFP security and the HIPAA-compliant scanning checklist.
Banking and credit unions: GLBA and FFIEC
Section 501(b) and the Interagency Guidelines require encryption of customer information in transit, and FFIEC IT examiners now walk the scan-to-email path. See bank and credit union MFP security and the GLBA compliance mapping.
K-12 education: FERPA and COPPA
Student records scanned to email are FERPA education records, and the 2026 COPPA amendments extend obligations for districts and their software vendors. See K-12 MFP security and COPPA 2026 compliance.
Auto dealerships: FTC Safeguards Rule
Dealerships are non-bank financial institutions under the FTC Safeguards Rule, and deal jackets moving through the copier are customer information in transit. See dealership MFP security.
Printer security software: what each category covers
| Category | Examples | What it secures | What it leaves open |
|---|---|---|---|
| Print management | PaperCut, uniFLOW | Pull printing, user authentication, job accounting | Scan-to-email transport beyond the TLS leg |
| Document capture | Kofax / Tungsten | Scan routing into workflows | Per-document recipient access logs |
| Secure email gateways | Virtru and similar | Mailbox-to-mailbox encryption | The MFP-to-relay hop and retention sprawl |
| Encrypted transport | SecureMFP | End-to-end encryption from device to recipient with audit evidence | Print-path controls (pair with 1 through 5 above) |
The categories are complements, not substitutes. The full comparison shows the capability table head to head.
MFP security FAQ
What is MFP security?
MFP security is the set of controls that protect multifunction printers and the documents that pass through them: network segmentation, credential hardening, firmware patching, user authentication, drive encryption, encrypted document transport, and monitoring. It matters because an MFP is a networked computer that scans, stores, and transmits sensitive documents all day.
Are network printers a security risk?
Yes. Printers run full operating systems with web servers and stored credentials, are rarely patched or monitored, and 67 percent of organizations reported a print-related breach in a single year in the Quocirca Print Security Landscape. Attackers use them as network footholds and as sources of sensitive documents.
What is the biggest printer security vulnerability?
Unencrypted scan-to-email. Device hardening has vendor tooling, but the scan-to-email path sends plaintext attachments through multiple relays into uncontrolled mailboxes. It fails encryption-in-transit requirements under GLBA, HIPAA, FERPA, and the FTC Safeguards Rule, and security assessors now flag it as a named finding.
How do I secure a network printer?
Put it on a dedicated VLAN, change default admin credentials, disable unused services, patch firmware monthly, require badge or PIN authentication, encrypt the internal drive, block outbound port 25, replace plaintext scan-to-email with encrypted transport, and feed device logs to your SIEM.
Does HIPAA apply to printers?
Yes. The HIPAA Security Rule applies to electronic protected health information wherever it is created, stored, or transmitted, which includes MFP hard drives and every scan-to-email transmission. The transmission-security standard at 164.312(e)(1) is the control assessors map to the scan path.
What does printer security software cost?
Print management suites price per server and per user. Document capture prices per workflow. SecureMFP prices per device per month, deploys in about five minutes per device, and requires no server install or firmware change. Pricing details come through channel partners and a 30-minute walkthrough.
Harden the fleet, starting with the gap assessors flag first
A SecureMFP specialist will walk your fleet against the eight controls, show where the scan-to-email path fails the four examiner questions, and map the fix for your regulatory environment. Thirty minutes is the standard slot. Deployment is roughly five minutes per device with no firmware change, no copier replacement, and no end-user retraining, brand-agnostic across HP, Canon, Xerox, Konica Minolta, Ricoh, Sharp, Toshiba, and Lexmark.