How can a business ensure that mobile workers can safely reach internal company websites?

A Virtual Private Network (VPN) creates an encrypted tunnel between the mobile device and the company's internal network, ensuring that all traffic, including access to internal websites, is secure regardless of the underlying network (e.g., public Wi-Fi, cellular data). This protects data from interception and allows access to resources typically restricted to the corporate network. Preventing users from connecting to public Wi-Fi is impractical and doesn't address the need for secure access when off-site. Incognito/Private mode only prevents local browsing history from being saved and does not encrypt network traffic or secure the connection itself. While Android has security features, a built-in firewall primarily controls inbound/outbound connections on the device and does not inherently provide secure, encrypted access to internal corporate resources over untrusted networks.