What Are the Security Features of Linux?

For the basic security features, Linux has password authentication, file system discretionary access control, and security auditing. These three fundamental features are necessary to achieve a security evaluation at the C2 level [4].

What are three levels of security in Linux?

There are three access types (read, write, execute) and three accessors: the user who owns it, the group that may have access to it, and all “other” users.

How secure is Linux?

The general consensus among experts is that Linux is a highly secure OS – arguably the most secure OS by design. This article will examine the key factors that contribute to the robust security of Linux, and evaluate the level of protection against vulnerabilities and attacks that Linux offers administrators and users.