It's important to understand how ransomware is distributed in order to either block or prevent it. If we successfully block the source and distribution mechanism of the ransomware, half of the prevention is done. Ransomware is distributed in the same manner as other malware. We often term the source or distribution techniques as attack vectors. Malware can use the following distribution techniques:

• Spam and phishing
• Infected websites
• Lateral movement

The preceding methods are not only limited to ransomware but also extend to other kinds of malware. In this chapter, we will discuss the details of these techniques.