SSH keys are an essential tool in computer security for several reasons. First, they provide additional safeguards for sensitive data and systems. Because SSH keys can be used to authenticate a user without a password, so they are much more secure than password-based authentication. This makes them a popular choice for securing systems that contain sensitive data, such as financial data, medical records, and government secrets.
Second, SSH keys are often used in automated processes and scripts, making it easier for attackers to access a system if the keys are not correctly secured. This is because scripts and computerized processes often run unattended. As a result, if an attacker gains access to a machine running one of these processes, they may be able to use the SSH key to access other systems and data.