An endpoint is any device that connects to a network, such as computers, laptops, smartphones, tablets, or servers. These devices serve as entry or exit points for data and are often targeted by cyber threats. Protecting endpoints is crucial because they can be exploited to gain unauthorized access to sensitive information or disrupt network operations. Effective endpoint security involves keeping devices updated, using antivirus software, and implementing security policies to reduce risks and safeguard both personal and organizational data.