Dimitris Gkoutzamanis

Published items (289)

Massive Ransomware Campaign Targeting VMware ESXi Servers Worldwide

The Italian National Cybersecurity Agency and the France CERT have issued an alert about an ongoing ransomware campaign targeting VMware ESXi servers worldwide. Organizations are urged to apply security patches and prevent exploitation of the CVE-2021-21974 vulnerability

Why Use a Penetration Testing Framework

Penetration testing is a crucial aspect of system security, but it's not always easy to know where to start or how to ensure that you're testing all the right areas.

The Colorful Teams of Cybersecurity

What are all those colored security teams and all those colored hacker hats? What is the difference between them and why do we need them?

A Simple Guide To Secure IoT Devices

IoT devices introduce new security risks, as these devices may be vulnerable to multiple cyber threats. This is a simple guide to secure your IoT devices.

Top Qualities of a Successful CISO

The top qualities of a successful CISO to enable them to perform their roles and protect their organization's data and systems.

Top Tools For Kubernetes Security

Container technology has become increasingly popular but has also expanded your organization's attack surface. Here's how to secure it with free tools.

APT Group Targeting Governments Worldwide

State-financed Chinese hackers have launched spear phishing campaigns to launch against international governments, academic, and research organizations.