Hacking involves illegally entering computer systems to make unauthorized changes to files and data. Signs of being hacked include finding unsent emails in your sent folder or missing files and desktop icons. If hacked, one should shut off internet connections, install a firewall, and restore the compromised system to protect information and avoid further problems. Ethical hacking helps prevent intrusions by testing a system's security without causing damage or stealing information. While the outcomes of hacking are difficult to define, it ultimately compromises how systems of assessing information as positive or negative can function.