Case Studies

Client Success Stories

Real results from real businesses. See how Perimetra has protected healthcare practices, law firms, and financial services companies from ransomware, phishing, and business email compromise.

🏥Healthcare — Dental Group (14 Locations)

Ransomware Attack Stopped on a Friday Afternoon — Zero Files Encrypted

Key Results

0

Patient files encrypted

< 60 sec

Detection to isolation time

$0

Recovery cost

HIPAA

Compliance maintained throughout

“Perimetra stopped the attack before anyone on our team knew it was happening. The report the next morning showed exactly what occurred and how it was handled. That alone paid for years of service.”

Sandra C., Practice Manager — Dental Group (14 Locations)

The Challenge

Situation

A regional dental group with 14 locations had been relying on traditional antivirus across all their workstations. During a routine Friday afternoon, an employee at one location received a phishing email disguised as a patient insurance update. The employee clicked a link and unknowingly installed a ransomware dropper. Without EDR, the attack would have gone undetected until Monday morning — by which time patient records across all 14 locations could have been encrypted.

The Solution

What We Deployed

Perimetra's EDR agent detected the anomalous process behavior within seconds of execution — before a single file was encrypted. The affected workstation was automatically isolated from the network, preventing lateral movement. An automated threat report was generated and emailed to the practice manager within minutes. The agent was removed, the workstation cleaned, and the practice was back to full operation within the hour.

⚖️Legal — Regional Law Firm (28 Attorneys)

Business Email Compromise Attempt Blocked — $87,000 Wire Transfer Prevented

Key Results

$87,000

Wire fraud prevented

0

Emails reaching staff from this campaign

11

Staff enrolled in BEC-focused training

100%

Training completion within 30 days

“We had no idea how sophisticated these attacks had become. The email looked completely legitimate. Perimetra caught what our eyes couldn't.”

David M., Managing Partner — Regional Law Firm

The Challenge

Situation

A regional law firm with 28 attorneys was targeted by a sophisticated BEC campaign. Attackers had been monitoring email communications for several weeks and identified a pending real estate transaction. Using a spoofed email that appeared to come from the firm's managing partner, the attacker instructed the firm's bookkeeper to wire $87,000 to a 'new client escrow account.' The bookkeeper almost complied — but Perimetra's email security gateway flagged the email as a BEC attempt before it reached the inbox.

The Solution

What We Deployed

Perimetra's email security gateway analyzed the message in real time — detecting the domain spoofing, the urgency language, and the payment request pattern that together indicated a BEC attack. The email was quarantined before delivery, and an alert was sent to the firm's designated security contact. No wire transfer occurred. The firm subsequently enrolled all staff in Perimetra's Security Awareness Training with a BEC-focused curriculum.

💰Financial Services — Accounting Firm (80 Staff)

Phishing Campaign Targeting Payroll Staff — All 47 Emails Blocked

Key Results

47

Phishing emails blocked, 0 delivered

0

Credentials compromised

$0

Client data exposed

2x

Reduction in phishing attempts after 90 days of training

“Tax season is when we're most vulnerable and most targeted. Knowing Perimetra is blocking these attempts in real time lets our team focus on client work instead of worrying about every email.”

Thomas R., CFO — Accounting Firm (80 Staff)

The Challenge

Situation

An accounting firm with 80 staff members was targeted by a coordinated spear-phishing campaign during tax season. Attackers sent 47 individually crafted phishing emails to members of the payroll and billing team, impersonating the IRS, state tax authorities, and major accounting software vendors. Each email contained a link to a credential harvesting page designed to steal access to the firm's practice management software.

The Solution

What We Deployed

Perimetra's email security gateway blocked all 47 phishing emails before delivery — analyzing sender authentication, link destinations, and domain reputation in real time. The gateway's URL rewriting feature also protected any links that might have been accessed via forwarded emails. The firm's IT contact received a consolidated threat summary showing all 47 blocked attempts, the targeting pattern, and recommended hardening steps.

Your Business Could Be Next.

The clients in these stories didn't expect to be targeted — but they were ready when it happened. Get your free security assessment today.