Popular VPNs you should avoid

Here are some popular VPNs that you should avoid due to various privacy and security concerns:

XVPN - Free Connected Limited

This company's website shows that it is owned by Free connected limited. in Hong Kong.
However, through our research we found out that the VPN belongs to "成都卓拙科技", a company located in a government-planned software park, where your information is not guaranteed to be safe.
Also, according to their employees there is another app called potato VPN which also belongs to this company.

PandaVPN - Mopubi Limited

This is a product that focuses on providing Chinese users with the ability to bypass firewalls, it appears to no longer be available to Chinese users in 2022 due to government pressure, but it's still in operation, so if you're still using it please be mindful of the security of your information.

SkyVPN

This company was disclosed by Top10VPN a long time ago and is a VPN organization belonging to "杭州腾展". They also have better-known products, such as "Dingtone".
This company also has a lot of VPN products that were removed for manipulating apple's rankings, so be extra careful if you find you're using a program that interacts similarly to this one.

How to avoid?

Do plenty of research before choosing a VPN, and email me if you have questions.