This past year we haven't traveled or had the necessity of using a VPN on public wifi, but with the vaccine inoculating more people, that, hopefully, will soon change. In times past I've used a VPN often, and have purchased several. This article discusses a vulnerability in several VPNs, most of which are free. Should you have an interest in reading more about this, following are a couple of links to take a look at:

https://blog.malwarebytes.com/cybercrime/privacy/2021/03/21-million-free-vpn-users-data-exposed/

https://www.vpnmentor.com/blog/report-free-vpns-leak/#Timeline-of-Discovery-and-Owner-Reaction

I don't like the concept of using a free VPN -- or a free "anything", for that matter -- as how can one expect a company to provide an expensive service for 'free'? I purchase any VPN I use, and do not pick an obscure VPN, as most of the ones in the article are. I read reviews of any VPN I'm interested in.

Anyway, if you do use a VPN, be cautious in what you use.

Jim Hamm