Single-character pairs only. Multi-character confusables (rn vs m, cl vs d) are outside scope. These are a known gap in confusables.txt itself.
The false positives at the bottom
，更多细节参见服务器推荐
（四）出于他人胁迫或者诱骗的；
Privacy policy — This is something that some users might take for granted, but you need to pay special attention to the data-handling, storage, and usage practices of a VPN. These practices should be clearly laid out in a privacy policy, and if they aren't, you should not subscribe. Most VPNs require access to your IP address, online transactions, and browsing history, plus your personal details when you sign up. Your favorite VPN should not store these details under any circumstances, as that would negate the whole anonymity thing.