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Threat Actors

Learn about the individuals and groups behind cyberattacks, including nation-state hackers, cybercriminal organizations, hacktivists, and insider threats. These articles analyze motivations, tactics, and real-world examples to help you understand who poses risks to your digital assets.

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Tailgating Attack

Tailgating Attack Cybersecurity: Stop the Walk-In Breach

In 2019, a penetration tester hired by the state of Iowa walked into a locked courthouse after hours simply by following an employee through a secured door. He was arrested — despite being under contract to test exactly that vulnerability. The incident made national headlines and exposed an uncomfortable truth: a

Carl B. Johnson Oct 10, 2020 7 min read
Dark Web

What Is the Dark Web? A Security Pro's Real Guide

Your Stolen Password Is Probably Already There In 2024, a single dark web marketplace called BreachForums was seized by the FBI — and then resurrected by its users within two weeks. That tells you everything about the persistence of the underground economy. If you've ever wondered what is the

Carl B. Johnson Jun 25, 2020 6 min read
Cybersecurity Glossary

Cybersecurity Glossary for Beginners: 40+ Terms

When the Colonial Pipeline ransomware attack shut down fuel distribution across the U.S. East Coast in 2021, news anchors stumbled over terms like "ransomware," "threat actor," and "zero trust." Millions of people realized they didn't have the vocabulary to understand the

Carl B. Johnson May 11, 2020 8 min read
Types of Malware

Types of Malware: What Actually Hits Networks in 2026

A Single Click Cost One Hospital Chain $100 Million In 2024, Change Healthcare was hit by the ALPHV/BlackCat ransomware group. The attack disrupted insurance claims processing for thousands of healthcare providers across the United States. UnitedHealth Group eventually disclosed costs exceeding $870 million related to the incident. The entry

Carl B. Johnson May 08, 2020 7 min read
Medusa Ransomware

Medusa Ransomware Gang Phishing Campaigns: What to Know

In March 2025, CISA and the FBI issued a joint advisory warning that the Medusa ransomware gang had compromised over 300 organizations across critical infrastructure sectors — healthcare, education, legal, insurance, and manufacturing. The attack vector in the vast majority of cases? Phishing. Not some exotic zero-day exploit. Not a nation-state

Carl B. Johnson Feb 28, 2020 7 min read
Spoof

Spoof Attacks: How Threat Actors Hijack Trust

A Single Spoofed Email Cost This Company $46.7 Million In 2016, FACC Operations GmbH, an Austrian aerospace parts manufacturer, lost €42 million (roughly $46.7 million USD) after attackers sent a spoofed email impersonating the company's CEO. The finance department wired the money to accounts controlled by

Carl B. Johnson Feb 23, 2020 7 min read
Ransomware

What Is Ransomware? A Practical Defense Guide for 2026

In May 2021, Colonial Pipeline paid a $4.4 million ransom to the DarkSide threat actor group after a single compromised password shut down fuel distribution across the U.S. East Coast. Gas stations ran dry. Panic buying erupted. And one of the most critical infrastructure networks in the country

Carl B. Johnson Nov 30, 2019 7 min read
Ransomware Examples 2026

Ransomware Examples 2026: Real Attacks Hitting Now

A single phishing email brought down a regional hospital chain's entire electronic health records system for eleven days in January. The attackers demanded $14 million in cryptocurrency. The hospital paid. That's where we are right now — and if you're searching for ransomware examples 2026,

Carl B. Johnson Nov 30, 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
Types of Malware

Types of Malware: What Every Organization Must Know

In 2023, the FBI's Internet Crime Complaint Center received over 880,000 complaints with potential losses exceeding $12.5 billion — and malware was the engine behind a staggering number of those incidents. I've worked incident response cases where a single malware infection spiraled into a multi-million-dollar

Carl B. Johnson Jul 20, 2019 6 min read