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Threat Prevention

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Ransomware

What Is Ransomware? A Security Pro's Blunt Guide

A Single Click That Cost a Hospital $22 Million In February 2024, Change Healthcare — the payment processing backbone for thousands of U.S. hospitals and pharmacies — was hit by the ALPHV/BlackCat ransomware group. UnitedHealth Group, its parent company, confirmed paying approximately $22 million in ransom. The attack disrupted prescription

Carl B. Johnson Aug 11, 2025 7 min read
Ransomware

What Is Ransomware? A Security Pro's Blunt Guide

In September 2023, MGM Resorts watched its slot machines go dark, hotel room keys stop working, and reservation systems crash — all because a threat actor social-engineered the company's help desk with a ten-minute phone call. The attackers deployed ransomware that cost MGM an estimated $100 million in lost

Carl B. Johnson Feb 28, 2024 6 min read
Ransomware

What Is Ransomware? A Practical Defense Guide for 2021

In February 2021, Kia Motors America was hit with a ransomware attack reportedly demanding $20 million in Bitcoin. Customers couldn't access dealer portals. Internal systems went dark. The company spent days scrambling to restore operations. This wasn't an isolated event — it was the latest in a

Carl B. Johnson Mar 31, 2021 6 min read
Malware

What Is Malware? A Security Pro's Real-World Guide

The Attack That Shut Down 100 Romanian Hospitals In February 2024, a ransomware attack hit over 100 hospitals across Romania, forcing them offline and back to pen-and-paper operations. Patient data was encrypted. Emergency services were disrupted. The attack vector? Malware that slipped through a single vulnerable system and spread laterally

Carl B. Johnson May 08, 2020 7 min read