.NET Toolkit refers to software developed using Microsoft's .NET framework, a popular platform for building Windows applications. While .NET is widely used for legitimate purposes, cybercriminals also exploit it to create hacking tools and malware. These toolkits take advantage of .NET’s flexibility and integration with Windows systems, allowing attackers to build powerful programs that can evade detection, steal data, or control infected computers. Understanding .NET Toolkits helps in recognizing potential threats and improving cybersecurity defenses.