On the technical level, VPN and wall climbing tools adopt the same technical principle, but there are still essential differences between them. The difference between the two core areas is that the primary task of A VPN is to ensure the security of user data transmission, and the secondary task is to help users in China to break the border. The wall climbing tool has no other function, its only mission is to help users in China climb the wall. It's what kind of company will provide what kind of service. 

For any global VPN service provider, its data protection capabilities should not be questioned, because that is the purpose of its existence. This is not the case with wall scaling tools, which are mostly small to medium sized teams. Companies or even individuals. Its main risks are as follows:

1. The server may have a recording function to retain traces of user access.

2. Its server may be attacked by hackers and steal user data;

3. There is a risk that the service provider may resell user data;

4. Chinese authorities may recruit (by threat or inducement) service providers to climb the wall;

5. The wall climbing service provider faces the risk of phishing law enforcement;