Netia Leak
 

In 2016 approximately 14GB of user data was leaked out of the polish telecom "Netia" by the group "Pravyy Sector" or "P.A.S."

See: Link1 Link2 Link3

At that time, the data was leaked publicly and was available for downloading by anyone. The filename was "anon-netiaplfulldump2" or "netiaplfulldump2".

However in 2021 that data is not easy to find anymore - at least I could not find it on any torrent nor P2P sites.

Q: Does anyone of you know of any forums or sites in clearnet or DW that archive such stuff ?

Up till now, I have been doing only Reverse Engineering and coding and I do not know where to start searching for such data dumps...or even what people to ask.

Almost all leaked data sources vanish from the net within a year or two. It's best to have it downloaded if one wants to analyze it at a later date. Archives or copies are not maintained due to the large sizes. It requires huge bandwidth / storage and some even exist on torrents, but without any seeding. People move on to more recent ones and only some with enough firepower support them for sometime.

here https://cloud.mail.ru/public/4XkG/e37yV3Rpu/