Law firms with 25–150 employees handle confidential client communications, financial records, litigation materials, and privileged data that make them prime targets for cyberattacks. A single breach can disrupt operations for days, damage reputation, and result in significant financial loss.

To properly protect sensitive legal information, firms must implement layered security controls across user accounts, endpoints, email systems, and backup environments. Security must be structured, documented, and continuously monitored — not treated as a one-time setup.

Below are the essential security controls every mid-sized law firm should have in place.

1. Multi-Factor Authentication (MFA) Across All Accounts

Passwords alone are no longer sufficient protection.

Every law firm should enforce MFA on:

– Microsoft 365 accounts

– Remote access portals

– VPN connections

– Administrative accounts

– Cloud applications

MFA significantly reduces the risk of unauthorized access even if login credentials are compromised through phishing or data breaches.

2. Endpoint Detection and Response (EDR)

Traditional antivirus software is no longer enough to defend against modern threats.

Endpoint Detection and Response (EDR) provides:

Behavioral threat monitoring

Real-time alerting

Automatic device isolation

Centralized visibility across all endpoints

EDR helps contain suspicious activity before it spreads across the network and plays a critical role in preventing ransomware attacks in law firms.

3. Advanced Email Security

Email remains the primary attack vector for law firms.

Essential protections include:

– Phishing filtering

– Attachment sandboxing

– Link protection and URL rewriting

– Impersonation detection

– Domain authentication (SPF, DKIM, DMARC)

Because attorneys regularly exchange documents and external communications, advanced email filtering is a foundational security layer.

4. Secure and Tested Backup Systems

Backups are the final safeguard against catastrophic data loss.

Law firms should ensure backups are:

– Encrypted

– Stored offsite or in immutable cloud storage

– Protected from tampering

– Tested regularly

Backup restoration testing should occur at least quarterly. A backup that has never been tested cannot be relied upon during a crisis.

5. Access Control and Least-Privilege Policies

Not every user should have administrative access.

Best practices include:

– Role-based access controls

– Removal of unused accounts

– Structured onboarding and offboarding

– Regular permission audits

Reducing unnecessary privileges limits the potential impact of a compromised account.

6. Ongoing Monitoring and Formal Risk Assessments

Security controls must evolve as threats change.

These controls are most effective when implemented within a structured and consistent environment. Firms that focus on standardizing IT infrastructure for law firms often see improved enforcement, clearer visibility, and reduced operational complexity.

Law firms should conduct:

– Annual formal cyber risk assessments for law firms

– Quarterly access reviews

– Continuous system monitoring

– Documented remediation tracking

A structured assessment process identifies control gaps before attackers do.

How These Controls Work Together

No single tool prevents every incident.

Layered security — combining authentication, monitoring, email protection, endpoint defense, backups, and access controls — significantly reduces both the likelihood and impact of cyber incidents.

When evaluating providers, firms should ensure these controls are clearly defined and documented as part of a broader security strategy when choosing the right MSP for law firms.

Firms comparing providers may also benefit from structured criteria when they compare MSPs for law firms.

About Our Security Approach for Law Firms

Klarman Consulting supports law firms in Chicago and the surrounding area with structured, security-first IT strategies designed for firms with 25–150 employees.

Our approach includes:

– Formal risk assessments

– Layered endpoint protection

– Advanced email security

– Secure backup strategies

– Defined response standards

– Proactive monitoring

We design IT environments that protect confidential client data while supporting attorney productivity.