Computer hacking refers to the practice of exploiting weaknesses in computer systems or networks to gain unauthorized access to data or control over devices. Hackers may use various techniques, such as malware, phishing, or social engineering, to breach security measures. While some hackers aim to steal information or disrupt services, others, known as ethical hackers, work to identify and fix vulnerabilities to improve security. The impact of hacking can be significant, affecting individuals, businesses, and governments. Cybersecurity measures, including firewalls and encryption, are essential to protect against hacking attempts. Awareness and education about safe online practices can help users defend against potential threats from hackers.