Yes. VPN still uses your data, more of it in fact because encrypted secure tunnel files are generally larger than the original data and also cached data on the ISP network are no longer called, so more goes to the greater internet.
this post was submitted on 29 Aug 2026
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Yes
DNS over HTTPS is for security and not privacy. Your ISP can still see what websites you visit.
Of course.
Lots of cybercrime has been solved by law-enforcement by matching traffic logs based on timestamps and throughput.
Or at least, publicly claiming to have done that and selling it to a jury as plausible, even if the actual thing that tipped them off was something else secret and inadmissible.
Yes. Encrypted traffic is still traffic and can still be measured.
And even captured. Just not read by any normal organization.
Or read at a later date when an encryption vulnerability is discovered
Or by organizations that already have those vulnerabilities and keys in place but haven’t publicized them to maintain an advantage. Aka intelligence agencies
some do go deeper with dpi, and if u are sus then there is something called 3 eyes/5 eyes and so on
Yeah, I remember some case where a college student was caught while using the school's network because they new the times and filesizes of something. I don't remember the exact details though.
Yes! In fact ISPs can use fingerprinting techniques to match websites with known data transmission patterns (ping, badwidth, packet timing, etc) to guess what websites you might be accessing even through an encrypted vpn. Some vpns (like mullvad and probably others) will throw in false data packets to thwart this type of fingerprinting.
Your ISP will be able to see the usage, and will almost certainly be able to tell that it is VPN usage. They won't be able to tell what you're doing or where you're truly connecting to, just that you transferred whatever quantity of encrypted data with the VPN company at whatever time.
They won't be able to tell what you're doing or where you're truly connecting to...
I mean, they technically can. There are really simple tools that allow doing this.
That would be for analysing traffic not using a VPN?