Print and Copy Security in Law Firms: The Overlooked Endpoint

October 15th, 2026

Most law firms have had their laptops, servers, and email examined by an IT provider, a client, or a cyber insurer. Very few have given the same scrutiny to the machines in the copy room. That gap is the problem. A modern multifunction printer is a networked computer with an operating system, a web management interface, internal storage, and stored credentials - and it sits inside the network with the same reach as anything else on the wire.

Print and copy security in a legal practice is not a facilities question. It is a confidentiality question with a technical answer, and it runs through the same devices that produce briefs, exhibits, and client documents every day. This is where the risk sits, what has actually gone wrong elsewhere, and what a firm can do about it.

The Threat Model: Print Devices Are Endpoints

Copiers earned their exemption from IT scrutiny honestly. They were purchased through a copier dealer rather than an IT budget, they were mechanical for decades, and they had no reason to talk to anything. None of that is true now. Current devices run embedded operating systems, serve a web administration console, hold documents and address books on internal storage, and connect to email systems, network folders, and cloud services.

Two details make them more interesting to an attacker than a typical workstation. First, the device address book frequently stores service account credentials for scan-to-email and scan-to-folder. Second, the print management software behind the fleet usually runs on a server with broad access to the network. Both are high-value, and neither tends to appear in an asset inventory.

The neglect is measurable. Research by Quocirca cited by Ricoh found that unsecured printing practices were linked to data losses at 67 percent of organizations. Printers and copiers are frequently missing from patch cycles, endpoint monitoring, and security assessments, which is exactly the profile an attacker wants: a machine with network access, no monitoring, and firmware that has not changed in years.

Attack Paths That Have Already Worked

None of this is hypothetical. Every path below has been used against real organizations, and each one applies directly to a law firm's environment.

Print Management Software: PaperCut and the Ransomware Gangs

In 2023, a critical vulnerability in PaperCut MF and NG - CVE-2023-27350, rated 9.8 - allowed an unauthenticated attacker to bypass authentication in the setup wizard and run commands with SYSTEM privileges on the server. A companion flaw, CVE-2023-27351, leaked information. The exploits were not theoretical: CISA added the vulnerability to its Known Exploited Vulnerabilities catalog and published a joint advisory with the FBI (AA23-131A) after Clop, LockBit, and the Bl00dy ransomware gang used it for initial access, including against the education sector, which accounted for the majority of internet-exposed PaperCut servers.

The lesson generalizes past one vendor. Print management software is critical infrastructure with administrative reach over every device and user in the fleet. It needs the same treatment as any server: prompt patching, no exposure of its management interface to the internet, segmentation, and logging.

Default and Derived Credentials

Factory credentials remain one of the most reliable ways into a device. A well-documented example: hundreds of Brother printer models shipped with administrative passwords derived from the device serial number, and the serial number could be obtained without authentication through HTTP, SNMP, or IPP - so an attacker could calculate the password and log in. Brother acknowledged that one of the flaws could not be fully fixed by firmware, which puts the burden back on configuration and password hygiene.

Default administrator passwords are published in manuals and shared across entire product lines. In a firm, every device should have a unique administrative password stored in a vault, account lockout enabled, and the administrative web interface restricted to approved management subnets.

The Print Spooler

The Windows print spooler has produced some of the most consequential print vulnerabilities on record. PrintNightmare (CVE-2021-1675 and CVE-2021-34527) let attackers load a malicious driver through the spooler's driver installation function and execute code as SYSTEM - including on fully patched domain controllers where the spooler was enabled by default. CISA directed federal agencies to install Microsoft's out-of-band fix immediately, and Cisco Talos later linked Vice Society ransomware activity to exploitation of the flaw.

PrintNightmare was not the end of it. The print path continued to generate remote code execution and privilege escalation fixes through 2024 and 2025. The hardening steps that came out of it are still the right ones: disable the print spooler on servers that do not print (domain controllers especially), set driver installation to administrators only, block inbound SMB from untrusted networks, and monitor for abnormal driver loads in the print service logs.

Exposed Management Interfaces

Devices with web consoles reachable from the internet are found by automated scanners within hours. Copiers and printers should never be directly reachable from outside the network. Inside it, they belong on their own segmented network with firewall rules that permit only the traffic they need - print jobs from the print server, administrative access from approved workstations, and the specific scan destinations in use - with outbound internet access denied by default.

Confidentiality Duties That Reach Into the Copy Room

The security controls matter because the professional obligations attach to the documents, not the device. Three areas come up repeatedly in legal practices.

Metadata and Redaction

Scanned and converted files carry more than their visible contents. Metadata can include the author, save dates, revision history, embedded comments, and tracked changes. ABA Formal Opinion 06-442 concluded that the Model Rules contain no specific prohibition on a lawyer reviewing and using embedded metadata in a document received from another party, and that the rule most on point - Rule 4.4(b) - requires only prompt notice to the sender when a lawyer knows a document was sent inadvertently. Wisconsin is generally counted among the states that follow that approach.

The practical consequence falls on the sending side. A firm that prints to PDF or scans a document produces a new file while the original may still carry its revision history, so the copy room is one of the places where a scrubbing step has to happen before anything leaves the building. That step also has a limit worth knowing: D.C. Ethics Opinion 341 has warned that removing metadata in the context of discovery may be treated as alteration of evidence. Metadata policy is a decision to make deliberately, with the context in mind, not a blanket rule applied everywhere.

Redaction deserves the same care. Drawing black boxes over text in a PDF can leave the underlying characters fully extractable - the box covers the words without removing them. Proper redaction removes the content, and the verification step is simple: copy the text out of the finished PDF and confirm the protected material does not appear. Printing and rescanning a redacted page strips the text layer entirely, which is why the copy room remains a useful control for sensitive filings rather than only a risk.

Vendor Due Diligence Under Opinion 08-451

Every print vendor, cloud fax provider, managed print program, and records vendor that touches a firm's devices has some form of access to client documents. ABA Formal Opinion 08-451 addresses a lawyer's obligations when outsourcing services, and its due diligence points translate directly: the lawyer remains responsible for the work, security systems and disposal practices should be reviewed, written confidentiality agreements are strongly advisable, and the provider should be confirmed not to work for adversaries on the same or substantially related matters. Where client information protected by Rule 1.6 will be shared, disclosure and informed consent come into play.

In practice, that means knowing which technicians hold administrative credentials for the fleet, whether their remote access requires multi-factor authentication, whether their activity is logged, how a swapped or returned device is wiped and verified, and who at the vendor can answer those questions in writing. A practical review of a firm's print workflows is the natural place to start, because the answers are device-specific.

After an Incident: Opinion 483

ABA Formal Opinion 483 addresses what a lawyer must do after an electronic data breach or cyberattack, including duties to monitor for breaches and to notify clients when material client information is involved. The hard part is knowing an incident happened at all. If the copier reports nothing, a firm cannot tell whether a device was accessed, what was taken, or when it started - and that uncertainty lands directly on the notification analysis. Device logging, shipped to the same place as the rest of the firm's logs, is what turns an unanswerable question into a documented timeline.

Matter-Level Access Control and Ethical Walls

Firms invest real effort in ethical walls inside their document management system - and then route every print job to the same machine and every scan to the same folder. A shared output tray and a generic print credential quietly defeat the wall the firm built on purpose.

Access control on current devices can be tied to identity rather than to a room: print release at the device with a PIN or badge, scan destinations resolved from the user's own account rather than a shared folder, and role-based restrictions on which functions a user can invoke at all - scanning to external email and faxing to outside numbers are capabilities a firm may want to limit deliberately. Audit logs then show who printed, scanned, faxed, or copied what, and when. That record supports the breach analysis above and answers the security questionnaires that clients and insurers increasingly send.

Two groups deserve specific attention. Temporary attorneys, contract staff, and interns should receive device access with the same expiration discipline as their network accounts. Departing attorneys should lose device credentials and address book entries the same day their network access ends - the scan-to-email address book is a list of client contacts, and it outlives the departure if nobody removes it.

A Hardening Checklist for the Copy Room

• Inventory the fleet. Record model, serial number, IP address, firmware version, location, and active protocols for every device - including the ones nobody remembers buying.
• Change every default credential. Unique administrative passwords per device, stored in a vault, with account lockout enabled.
• Patch firmware on a schedule. Subscribe to the manufacturer's security advisories and match them against the inventory at least quarterly, backing up configuration first.
• Close unused services. Disable Telnet, FTP, unencrypted HTTP, SNMP v1 and v2c, WSD, and TFTP where they are not needed; use HTTPS for administration, SNMPv3 for monitoring, and encrypted printing.
• Segment the devices. A dedicated network segment with firewall rules permitting only necessary traffic, and no direct internet exposure.
• Encrypt storage and jobs. Encryption at rest on the device drive, automatic data overwrite of stored jobs, and encryption in transit.
• Require authentication for output. Secure print release by PIN or badge so documents do not sit in a shared tray.
• Lock down scan destinations. No open scan-to-folder shares, no anonymous senders, and an address book that holds no credentials the device does not need.
• Patch the print server. Treat print management software as critical infrastructure, keep its management interface off the internet, and log it.
• Harden the print path. Disable the spooler on servers that do not print, restrict driver installation to administrators, and block inbound SMB from untrusted networks.
• Centralize the logs. Send device and print server logs to the same monitoring the rest of the firm uses.
• Control retirement. Wipe and verify storage before any device is returned, resold, or recycled, and document it.

What to Ask Before You Trust a Print Environment

• When was every device in the fleet last patched, and how do you know?
• Are administrative interfaces reachable from outside the network?
• Which credentials are stored on the devices, and who can read them?
• Which vendor technicians hold administrative access, and is that access logged and MFA-protected?
• Can you produce a record of who copied a given document last month?
• What happens to a device's storage when the lease ends?
• Do device logs reach your monitoring, or stop at the device?
• Is copying, scanning, and faxing tied to a person, or to a shared login?

Bring the Copy Room Into the Security Program

A firm does not need to choose between the productivity of a modern print fleet and the confidentiality obligations that come with the practice. It needs the devices treated as what they are: networked endpoints holding client information, with the same patching, monitoring, segmentation, authentication, and logging as everything else on the network.

Forward TS works with Milwaukee-area law firms on both halves of that. Our managed IT services bring imaging devices into the firm's patching, monitoring, and access-control program, and our managed print services keep the fleet itself configured, supplied, and secure. If you want to know what a security assessment covers, we have written about that as well.

Start with a free audit to see where your devices are exposed and what they are reporting, or contact us to talk through what your practice needs.