[leoniss]

Where do you find link to those database breaches dumps that happen every now and then?

[Wouawo]

It depends but in general they are either available on leak forums or on Telegram by paying

[Velo]

Yeah you can find them publicly for free or newer ones for sale.
Or use a service like my signature to access a big collection of them.

[leoniss]

Where do you find link to those database breaches dumps that happen every now and then?

What are the most popular ones?

[webdev77]

Dumps / Combo Lists
Providing accounts that don't belong to you, whether in trades, for sale, or free, dumps are not allowed. The definition of a dump is a file with logins, passwords, personal details or emails (marketing email lists are fine). We do define "combo lists" as dumps as well.

We recommend you take the time to read the HF Help Documents section. The answer to your questions should be contained in there.