VPNs keep your internet activity hidden, but if someone knows what they’re looking for, they can know when you’re using one.. It might sound alarming, but as long as you are using a reliable VPN and it is working fine it will Probably there is nothing to worry about. First, let’s explain how someone could tell you are using a VPN. It all comes down to IP addresses.
When you connect to the internet without a VPN, someone monitoring your activity will see you connect to multiple IP addresses for each website or online service you use. If you are using a VPN, however, the only IP address you would connect to would be the VPN’s proxy server, where your traffic is routed. Someone could cross this IP address with known VPN server addresses and confirm that this is what you are connecting to.
So, who can see what IP address you are connecting to? Your ISP can see your router activity and, depending on where you live, can share it with government agencies, who can gain access to your internet traffic in the first place. It is also possible for the administrator of a wifi network to see which address you are connecting to, and there are ways to sniff another user’s browsing data if you are connected to the same network.
However, the only thing they were able to confirm is whether you are using a VPN. All traffic going to the VPN server is always hidden, and no one can guess what you were Actually connection to — as long as you are using a true VPN without log, It is.
It’s also possible for VPN connections to fail, which would ostensibly reveal your traffic to anyone keeping an eye out, which is why VPN kill switches are a necessary feature.
It is also possible that a website recognizes the IP address of a VPN. This is normally not a problem, but some websites can block VPN servers from accessing their content, especially if a VPN would allow users to bypass paywalls or strict regional blocks. It’s rare, however, and many VPNs have contingency plans to combat such restrictions.
So the bottom line: people can tell if you’re using a VPN, and most of them are exactly the people you’re trying to hide your browsing activity from in the first place. But as long as your VPN is working as intended (and is legal to use where you live), they can’t see what you’re doing and you won’t be in trouble.