Computer Security US Blog

Computer Security News and Insights

Incident Response

How to Respond to a Cyberattack: A Practical Guide

In 2023, MGM Resorts lost an estimated $100 million after a social engineering attack that started with a single phone call to an IT help desk. The threat actor impersonated an employee, convinced a technician to reset credentials, and within hours had deployed ransomware across critical systems. Slot machines went

Carl B. Johnson Oct 09, 2019 7 min read
Cybersecurity Incident Examples

Cybersecurity Incident Examples That Changed Security

A Single Stolen Password Started a $4.4 Billion Problem In May 2021, a single compromised password shut down the Colonial Pipeline — the largest fuel pipeline in the United States. Fuel shortages hit the East Coast. Panic buying emptied gas stations across multiple states. The company paid a $4.4

Carl B. Johnson Oct 09, 2019 7 min read
Cyber Incident Reporting

How to Report a Cyber Incident: A Step-by-Step Guide

The Breach That Nobody Reported — Until It Was Too Late In 2023, a mid-size healthcare provider in the Midwest discovered suspicious network activity on a Friday afternoon. The IT manager flagged it internally but didn't report it externally. By Monday morning, threat actors had exfiltrated 1.4 million

Carl B. Johnson Oct 01, 2019 6 min read
Insider Threat Awareness

Insider Threat Awareness: What Most Companies Miss

The Threat Already Inside Your Building In January 2023, the FBI arrested a former GE Aviation employee who had spent years downloading thousands of proprietary turbine technology files and transferring trade secrets to a competing business in China. The insider had legitimate access. He passed every background check. He sat

Carl B. Johnson Oct 01, 2019 6 min read
Insider Threat Examples

Insider Threat Examples: Real Breaches That Cost Millions

The Threat Already Inside Your Building In 2022, a former employee at Cash App's parent company, Block, downloaded reports containing the personal information of 8.2 million customers — months after leaving the company. Block disclosed the breach in an SEC filing, and lawsuits followed. The attacker didn'

Carl B. Johnson Oct 01, 2019 7 min read
Insider Threats

How to Prevent Insider Threats Before They Cost Millions

In 2022, a former employee at Cash App's parent company, Block Inc., downloaded reports containing the personal information of over 8 million customers — months after they'd left the company. The access was never revoked. No alarm was triggered. The breach wasn't discovered until the

Carl B. Johnson Oct 01, 2019 7 min read
Insider Threats

Malicious Insider vs Negligent Insider: Real Threat Guide

One Employee Stole Data for Profit. The Other Just Clicked the Wrong Link. In 2022, a former employee of a major healthcare organization was sentenced to federal prison for stealing patient records and selling them. That same year, the Verizon Data Breach Investigations Report found that 82% of breaches involved

Carl B. Johnson Oct 01, 2019 7 min read
Insider Threat Indicators

Insider Threat Indicators: 9 Red Flags You Can't Ignore

The Breach That Came From the Inside In 2022, a former Twitter employee was convicted of spying on behalf of Saudi Arabia, accessing the personal data of dissidents using nothing more than his legitimate credentials. No malware. No phishing email. Just an insider with access and motive. That case made

Carl B. Johnson Oct 01, 2019 7 min read
Zero Trust Security Model

Zero Trust Security Model: A Practical Guide for 2026

The Breach That Proved Perimeters Don't Work In 2020, the SolarWinds breach gave roughly 18,000 organizations a brutal lesson: once a threat actor gets past your perimeter, they can move laterally for months without detection. Government agencies, Fortune 500 companies, and critical infrastructure providers all had firewalls.

Carl B. Johnson Oct 01, 2019 7 min read