For me, it is a false sense of security.
It’s so easy to install a VPN, especially a free one, and consider oneself protected. Now that your IP is hidden, nothing bad can happen to you, right?
Unfortunately, no, it’s not.
The danger lies in the possibility of your real IP-address getting leaked to the websites you visit despite the security measures you take. It is especially vital if you use a VPN for torrenting, like leaks, in this case, may result in legal consequences.
And while the best VPN services are known for protecting your real IP well, what interests me today is the performance of several free virtual private networks.