What term is used to describe a non-malicious code hidden message within a program?

The term "Easter Egg" is used to refer to a non-malicious hidden message or feature embedded within a program or software application. These Easter Eggs are typically playful and intended to surprise or amuse users, often being a tribute or nod from the developers. They can range from a simple text message to a complex feature that requires specific actions to uncover.

Easter Eggs are distinct from malicious code, as they do not harm the user or the system. Instead, they serve as a secret delight, enhancing user engagement with the application. This subtle integration allows for creativity and fun within software development, reflecting the personalities of the developers.

Other terms like Logic Bomb refer to pieces of code designed to execute under specific conditions, often with malicious intent, while a Downloader typically relates to malware designed to retrieve and install further malicious software. The term Fileless Technique pertains to attack methods that operate in-memory rather than relying on traditional files, highlighting an entirely different aspect of cybersecurity. Thus, understanding these distinctions solidifies the concept of what constitutes an Easter Egg in programming.