Horus is a new employee at an it company. soon he learns of the unethical practices done by his superiors and other employees at the company. he immediately informs such instances and behaviors to the upper management and other officials at the company. this act by horus is known as

whistle-blowing

Explanation:

Based on the information provided within the question it seems like Horus is being a whistle-blower in this scenario. This term refers to when an individual has private or sensitive information that may be either illegal or unethical and decides to tell someone with authority about this information. Which is what Horus is doing by telling upper management about the unethical practices being done by his fellow co-workers.

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sounds good to me mate!