[Urgent] Critical Vulnerabilities in PHP, Java, Node.js, and Certificate Authorities | A Beginner's Guide to Types of Cyber Attacks and Zero-Day/N-Day Attacks

IntroductionOver the past few days, there has been a series of reports regarding critical vulnerabilities. These affect "PHP, ...

Is Node.js download 'suspicious'!? I verified it using SHA-256 and digital signatures

On October 22, 2026, when I tried to update the Node.js I use in my development environment, a bit of a problem occurred.Even ...