what is covert channel
Covert Channel in C
A covert channel in C refers to a method of communication that allows processes to transfer information in a way that violates the system's security policy. This can occur through shared resources or inter-process communication mechanisms, and it can be used to leak information from one process to another without proper authorization.
Covert channels can be categorized into two types: 1. Storage Channels: These involve the direct or indirect writing and reading of data in a shared resource, such as a file or memory, to communicate information. 2. Timing Channels: These involve the use of variations in the timing behavior of a system to communicate information.
Covert channels pose a significant security risk as they can be exploited to bypass security mechanisms and leak sensitive information.
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