[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, ...

What is the critical PHP vulnerability 'php2shell'? What happened on October 21, 2026, when websites were temporarily suspended around the world?

Two vulnerabilities leading to unauthenticated remote code execution, for which even the Japanese Prime Minister called for ...