A VPN (Virtual Private Network) uses encryption to create a secure connection over the internet between a remote user and an organization's network. This helps in ensuring data privacy and security while the data is in transit. HTTPS encrypts individual web sessions but is not used for securing all the data transmitted from a remote user to a company network. A password manager helps in securely storing and managing passwords, but it does not encrypt data in transit. Antivirus software protects devices from malware but does not encrypt network traffic.