Hot CVEs, npm Worm Returns, Firefox RCE, M365 Email Raid & More

Dec 01, 2025Ravie LakshmananHacking News / Cybersecurity

Hackers are no longer breaking down doors; they are using familiar tools like code packages, cloud accounts, emails, chats, phones, and trusted partners to exploit vulnerabilities.

A single download or weak vendor can lead to a security breach affecting multiple users. A simple link or bug can compromise your data across various platforms.

Each story serves as a reminder that our supposedly secure tools may actually be the weakest links in our defense.

⚡ Threat of the Week

Shai-Hulud Returns with More Aggression — The npm registry was targeted a second time by a self-replicating worm known as “Sha1-Hulud: The Second Coming,” impacting over 800 packages and 27,000 GitHub repositories. The primary goal was to steal sensitive data like API keys, cloud credentials, and npm and GitHub authentication information. The malware also created GitHub Actions workflows for command-and-control purposes and injected mechanisms to steal repository secrets. Additionally, the malware backdoored every npm package maintained by the victim, republishing them with malicious payloads. GitGuardian’s analysis revealed numerous compromised secrets, including GitHub access tokens, AWS IAM keys, and more.