Computer Security US Blog

Computer Security News and Insights

DNS Spoofing Attack

DNS Spoofing Attack: How It Works and How to Stop It

In April 2024, security researchers at Akamai reported a massive DNS hijacking campaign targeting over 600 domains, redirecting users to credential harvesting pages that looked identical to legitimate banking and email portals. Victims had no idea they were on a fake site. Their browsers showed no warnings. The URLs looked

Carl B. Johnson Dec 19, 2024 8 min read
SQL Injection

SQL Injection Explained: The Attack That Won't Die

A 20-Year-Old Vulnerability Still Dominating Breach Reports In 2023, the MOVEit Transfer vulnerability (CVE-2023-34362) compromised over 2,600 organizations and exposed data on more than 77 million individuals. At its core, the exploit was a SQL injection. The Cl0p ransomware gang used it to steal data from federal agencies, major

Carl B. Johnson Dec 19, 2024 7 min read
Cross-Site Scripting

Cross-Site Scripting Explained: A Practical Guide

In September 2024, a security researcher discovered a stored cross-site scripting vulnerability in a major email platform that allowed attackers to execute arbitrary JavaScript the moment a victim opened a crafted message. No clicks required beyond reading the email. The vulnerability sat unpatched for weeks. If you think XSS is

Carl B. Johnson Dec 10, 2024 8 min read
Phishing Awareness

How to Spot a Phishing Email Before It Costs You

In January 2024, a finance employee at a multinational firm in Hong Kong joined what appeared to be a routine video call with the company's CFO. Everything looked normal — the CFO's face, voice, and mannerisms were all spot-on. The employee followed instructions and wired $25 million

Carl B. Johnson Dec 10, 2024 7 min read
Phishing

What Is Phishing? A Security Pro's Real-World Guide

In January 2024, a finance employee at a multinational engineering firm in Hong Kong wired $25.6 million to threat actors after a video call with what appeared to be the company's CFO and several colleagues. Every person on that call was a deepfake. The attack started with

Carl B. Johnson Dec 10, 2024 7 min read
Medusa Ransomware

Medusa Ransomware Gang Phishing Campaigns Explained

A $100,000 Ransom Demand Starts With One Email In early 2024, the FBI and CISA issued a joint advisory warning that the Medusa ransomware gang had compromised over 300 organizations across critical infrastructure sectors since June 2021. The attack chain almost always starts the same way: phishing campaigns targeting

Carl B. Johnson Nov 07, 2024 7 min read
Phish

Phish: Why One Click Still Causes Million-Dollar Breaches

In January 2024, a finance employee at engineering firm Arup received an email inviting them to a video call with the company's CFO. Everything looked legitimate — the email, the meeting link, even the faces on the screen. It was all a deepfake-powered phish. That single interaction cost Arup

Carl B. Johnson Nov 07, 2024 7 min read