Computer Security US Blog

Computer Security News and Insights

Security for System

Security for System Environments: A 2025 Field Guide

The Breach That Started With a Single Unpatched System In February 2024, UnitedHealth Group's subsidiary Change Healthcare suffered a ransomware attack that disrupted healthcare payment processing across the United States for weeks. The attackers gained access through a Citrix remote access portal that lacked multi-factor authentication. One system.

Carl B. Johnson Nov 06, 2025 7 min read
What Is Cybersecurity

What Is Cybersecurity? A Practitioner's Real-World Guide

A $4.88 Million Question Nobody Asks Until It's Too Late In May 2023, the city of Dallas, Texas got hit with Royal ransomware. Emergency services disrupted. Court systems offline. Weeks of recovery. The estimated cost ran into tens of millions. And the entry point? A service account

Carl B. Johnson Nov 06, 2025 7 min read
IT Security

IT Security in 2025: What Actually Works Now

In March 2025, the FBI's Internet Crime Complaint Center reported that cybercrime losses in the United States exceeded $16.6 billion in 2024 — a 33% increase over the prior year. That number didn't come from sophisticated nation-state attacks alone. It came from basic IT security failures:

Carl B. Johnson Oct 26, 2025 7 min read
Jobs Computer Security

Jobs in Computer Security: Your 2025 Career Roadmap

In 2023, the FBI's Internet Crime Complaint Center received over 880,000 complaints with potential losses exceeding $12.5 billion — a 22% increase in losses over the previous year. That tidal wave of cybercrime isn't slowing down in 2025. It's accelerating. And every single

Carl B. Johnson Oct 26, 2025 7 min read
Computer Security

Computer Security: What Actually Works in 2025

The Breach That Rewrote the Rules of Computer Security In February 2024, Change Healthcare — one of the largest health payment processors in the United States — suffered a ransomware attack that disrupted claims processing for hospitals, pharmacies, and clinics across the country. UnitedHealth Group, its parent company, disclosed in its SEC

Carl B. Johnson Oct 26, 2025 7 min read
Web Security Best Practices

Web Security Best Practices That Actually Stop Breaches

In January 2023, T-Mobile disclosed that a threat actor exploited an API vulnerability to steal personal data on 37 million customer accounts. Not through some exotic zero-day — through a misconfigured web API that had been leaking data since November 2022. That's two months of silent hemorrhaging before anyone

Carl B. Johnson Oct 26, 2025 8 min read
Cyber Security

Cyber Security in 2025: What Actually Works Now

The Breach That Changed How I Think About Cyber Security In February 2025, the FBI's Internet Crime Complaint Center reported that losses from cybercrime exceeded $16 billion in 2024 — a record that shattered the previous year's numbers. That single statistic rewired how I approach cyber security

Carl B. Johnson Oct 15, 2025 7 min read
Home Computer Security

How Can You Protect Your Home Computer in 2025

In March 2025, the FBI's Internet Crime Complaint Center reported that Americans lost over $16 billion to cybercrime in 2024 — a staggering 33% jump from the year before. A massive chunk of those losses started with compromised home computers. Not enterprise servers. Not government networks. Regular people'

Carl B. Johnson Oct 15, 2025 7 min read
Computer Virus Prevention

Computer Virus Prevention: 9 Steps That Actually Work

A Single Click Cost One Hospital Chain $100 Million In 2024, Change Healthcare — the largest health payment processor in the United States — was hit by the ALPHV/BlackCat ransomware group. The attack disrupted pharmacy operations, delayed insurance claims, and ultimately cost UnitedHealth Group an estimated $872 million in the first

Carl B. Johnson Oct 15, 2025 7 min read