View more prices CyberGhost for Mac full review Now, more than ever, our lives are online. The internet is relied upon by billions of people for work, leisure and shopping, while the pandemic has moved much of our social lives behind a screen, too. Just how private these activities are might be a cause for concern, especially when handling sensitive data online. A VPN (virtual private network) can significantly bolster your online security by encrypting the connection between your device and a server on the internet. This makes your activity undetectable to your ISP (internet service provider), the government or anyone who might be trying to steal your data.