Ransomware is malicious software (malware) designed to prevent you from accessing your own data. This is usually done through Encryption is the process by which data is made illegible and unusable for unauthorized viewers. In order to use or read encrypted data, you must decrypted will. A secret key is required for this. There are two types of top-level encryption: symmetrical and asymmetrical . In the symmetric encryption the same key is used to encrypt and decrypt the data.... or other file locking methods. The data is thus taken hostage in Microsoft Exchange is more than just an e-mail solution, because it offers a diverse range of tools to better structure and organize your daily work. In addition, with its team functions, it makes collaboration and communication in the team much easier. On top of that, there is also the fact that it can be used with the other cloud services... for a ransom – hence the name.