Final answer:
The provided statements are known as Warning Banners, which inform users about the usage policies and restrictions of computer systems or networks to ensure cybersecurity and legal compliance.
Step-by-step explanation:
The examples provided are known as Warning Banners. Such messages appear on computer systems or networks and serve to inform authorized and unauthorized users of the policies governing the use of these technological resources. Warning banners typically declare the system's monitoring policy and the consequences of unauthorized access, which can lead to discipline or legal action. The text is designed to deter unauthorized use and to support legal action if someone breaches the system's security. This is a key component in maintaining cybersecurity and protecting digital assets.
Warning banners are part of a broader discussion about the tension between information privacy and government regulation. Countries around the world, including China and the United States, grapple with determining what information should be accessible to their citizens and what should be censored or monitored, balancing the protection of citizens' rights with national security and regulations.