Tag

Credential Theft

Posts exploring how attackers steal usernames, passwords, and authentication tokens through phishing, keylogging, brute force attacks, and credential stuffing. Includes actionable guidance on multi-factor authentication, password managers, and monitoring for compromised credentials.

posts

Trojan Horse Malware

Trojan Horse Malware: How It Gets In and How to Stop It

The Fake Invoice That Cost a Hospital System $28 Million In 2024, Ascension Health — one of the largest healthcare systems in the United States — suffered a devastating ransomware attack that disrupted operations across 140 hospitals. The initial entry vector? A malicious file that an employee downloaded, believing it to be

Carl B. Johnson Jul 14, 2019 7 min read
Keylogger Attack

Keylogger Attack: How Hackers Steal Every Keystroke

In 2023, the FBI dismantled a cybercrime ring that used a commercial keylogger called Snake Keylogger to steal credentials from over 10,000 victims across 50 countries. The malware recorded every keystroke — banking passwords, email logins, private messages — and quietly exfiltrated the data to attacker-controlled servers. The victims had no

Carl B. Johnson Jul 14, 2019 6 min read
DNS Spoofing

DNS Spoofing Attack: How Hackers Redirect Your Traffic

Your Employees Think They're on Your Bank's Website. They're Not. In April 2022, researchers at Avast documented a campaign where threat actors compromised home routers to execute a DNS spoofing attack that redirected users trying to visit legitimate banking sites to near-perfect credential theft

Carl B. Johnson Jul 14, 2019 6 min read
Cross-Site Scripting

Cross-Site Scripting Explained: What XSS Really Does

In 2018, British Airways disclosed a breach that exposed the personal and financial data of roughly 380,000 customers. The attack vector? A modified JavaScript injected into the airline's payment page — a textbook cross-site scripting exploit. The UK's Information Commissioner's Office initially proposed a

Carl B. Johnson Jul 14, 2019 7 min read
Phishing

How to Spot a Phishing Email Before It Costs You

In May 2021, a single phishing email led to the shutdown of Colonial Pipeline — the largest fuel pipeline in the United States. One compromised credential. One employee who didn't catch the red flags. The result: fuel shortages across the East Coast, a $4.4 million ransom payment, and

Carl B. Johnson Jul 04, 2019 7 min read
Phishing

What Is Phishing? The Attack Behind 80% of Breaches

In 2023, the FBI's Internet Crime Complaint Center received over 298,000 phishing complaints — making it the most reported cybercrime for the fifth consecutive year. Yet every week, I still talk to business owners who think phishing is just "those obvious Nigerian prince emails." It'

Carl B. Johnson Jul 04, 2019 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 wasn't some exotic zero-day exploit. It was phishing. Specifically, carefully crafted Medusa ransomware

Carl B. Johnson Jul 04, 2019 6 min read