Supporting Secure Operations for a Law Firm

Overview:

When this law firm reached out, they were not looking for growth strategy. They were in crisis.

An attacker had gained access to a Microsoft 365 email account and was actively communicating with clients for weeks. The breach only came to light when a client called and asked why they were being asked to pay a PayPal invoice.

The firm does not use PayPal.

That phone call exposed a serious compromise. An unauthorized individual had been inside a mailbox, impersonating staff and interacting with clients in real time.

The existing IT provider’s response was to simply change the password and move on.

That was the wrong answer.

For any business, this is serious. For a law firm entrusted with confidential client information, it is critical.

The Challenge:

This was not just a password issue.



This was a full business email compromise involving:

• Unauthorized mailbox access
• Active client impersonation
• Potential exposure of confidential legal communications
• Zero visibility into how long the attacker had access
• No advanced security protections in place

Even more concerning, the firm had no meaningful email security, no endpoint security, and no Microsoft 365 hardening. There was no monitoring, no layered defense, and no incident response plan.

When the owner asked the previous provider what had happened, the response was dismissive. “No big deal.”

For a law firm, that is never acceptable.

Under the ABA Model Rules of Professional Conduct, specifically Rule 1.1 regarding competence and Rule 1.6 regarding confidentiality of information, attorneys have an ethical obligation to take reasonable measures to protect client data. Cybersecurity is no longer optional. It is part of professional responsibility.

This firm needed more than IT support. They needed a security partner.

Our Approach:

We immediately treated the incident as what it was. A serious security breach requiring containment, investigation, and remediation.

Our approach included:

Forensic Review

We analyzed mailbox activity, sign in logs, forwarding rules, and remnants of attacker persistence to determine scope and exposure.

Account Hardening

We secured Microsoft 365 with proper conditional access policies, multifactor authentication enforcement, mailbox auditing, and tenant level security configuration.

Advanced Email Security

We deployed layered email protection to prevent phishing, spoofing, and impersonation attempts from reaching inboxes.

Endpoint Security Deployment

We implemented managed endpoint detection and response to ensure devices were monitored and protected against advanced threats.

Ongoing Monitoring and Management

We transitioned them from reactive IT to proactive security management.

This was not about “fixing a password.” It was about restoring trust, protecting clients, and ensuring compliance with professional obligations.

The Result:

Today, the firm operates with confidence.

• Microsoft 365 is properly secured and monitored
• Advanced email protection stops malicious activity before it reaches users
• Endpoint protection provides visibility and rapid response
• Security policies align with legal industry best practices
• Issues that once took days to resolve are now handled quickly and professionally

Most importantly, the firm now has an IT provider that works for them, not around them.

They are no longer guessing whether their systems are secure. They know they are.

Why This Matters:

Law firms hold some of the most sensitive information imaginable. Contracts. Litigation strategy. Financial records. Personal data.

A breach is not just an inconvenience. It is a liability.

Cybersecurity in the legal industry is not optional, and it is not something to minimize. It demands urgency, expertise, and accountability.

This firm learned the hard way what happens when security is treated casually.

Now they have a partner who treats it seriously.