Computer Security US Blog

Computer Security News and Insights

Ransomware Prevention

How to Prevent Ransomware: A Practical Defense Guide

A Single Click Cost One Hospital System $67 Million In 2024, Change Healthcare — one of the largest health payment processors in the U.S. — was hit by the ALPHV/BlackCat ransomware group. The attack disrupted claims processing for thousands of providers nationwide. UnitedHealth Group, its parent company, reported costs exceeding

Carl B. Johnson Jul 07, 2026 5 min read
Cybersecurity Due Diligence

Cybersecurity Due Diligence: What Most Companies Skip

The $350 Million Checkbox That Wasn't Checked When Verizon acquired Yahoo in 2017, two massive data breaches — affecting all three billion Yahoo accounts — knocked $350 million off the purchase price. The breaches had happened years earlier, but inadequate cybersecurity due diligence meant the full scope wasn't

Carl B. Johnson Jul 07, 2026 6 min read
Clean Desk Policy

Clean Desk Policy Cybersecurity: Your Cheapest Defense

The Sticky Note That Cost a Hospital $3 Million A nurse left a sticky note with login credentials on her monitor. A visitor photographed it. Within 48 hours, a threat actor had accessed patient records for over 10,000 individuals. The resulting HIPAA settlement wasn't pretty. I'

Carl B. Johnson Jul 06, 2026 5 min read
Computer Virus Prevention

Computer Virus Prevention: 9 Steps That Actually Work

The Virus That Cost a Hospital $65 Million In 2017, the WannaCry ransomware tore through the UK's National Health Service, locking down systems at over 80 organizations and forcing hospitals to divert ambulances. The estimated cost exceeded £92 million. The root cause? Unpatched Windows machines running a known

Carl B. Johnson Jul 06, 2026 5 min read
Cybersecurity Policy for Employees

Cybersecurity Policy for Employees: A Practical Guide

In 2023, MGM Resorts lost an estimated $100 million after a threat actor social-engineered a help desk employee with a ten-minute phone call. The attacker didn't exploit a zero-day vulnerability. They exploited a gap in employee policy — specifically, the identity verification process for password resets. A strong cybersecurity

Carl B. Johnson Jul 05, 2026 5 min read
Man in the Middle Attack

Man in the Middle Attack: How Hackers Steal Data

In January 2024, security researchers at Checkmarx uncovered a massive man in the middle attack campaign targeting the Python Package Index (PyPI), where threat actors intercepted developer credentials and injected malicious code into software supply chains. The attack went undetected for months. This wasn't some exotic nation-state operation

Carl B. Johnson Jul 05, 2026 6 min read
VPN Best Practices

VPN Best Practices: What Actually Protects You in 2026

In early 2024, Ivanti disclosed critical vulnerabilities in its Connect Secure VPN that were already being actively exploited by threat actors — including nation-state groups. CISA issued an emergency directive ordering federal agencies to disconnect affected devices within 48 hours. If that doesn't make you rethink your VPN best

Carl B. Johnson Jul 05, 2026 5 min read
Jobs Computer Security

Jobs in Computer Security: How to Break In and Move Up

700,000 Openings and Counting — Why Jobs in Computer Security Are Exploding The U.S. had roughly 700,000 unfilled cybersecurity positions in 2024, according to CyberSeek, a project supported by NIST and CompTIA. That number hasn't shrunk. If anything, the demand for jobs in computer security has

Carl B. Johnson Jul 04, 2026 5 min read