Cybersecurity is the practice of defending computers, servers, mobile devices, networks, and data from malicious attacks. It is necessary to secure data from threats and safeguard systems from viruses, as hackers attack people worldwide every half minute and cybercrime costs are projected to rise from $6 trillion in 2021 to $10.5 trillion by 2025. Key elements of cybersecurity include application security, information security, network security, disaster recovery, operational security, and end user education, using tools like passwords, firewalls, antivirus software, encryption, and authentication.
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