Resetera’s member Madjoki discovered stumbled into the intersting find that Epic Launcher is collecting players’ Steam friends and play history. Going into more details, Madjoki found out that Epic Games Launcher on start up searches for Steam installs and proceeds to get list of files in your Steam Cloud. 

This also includes game saves for every user that has logged in on your PC, reports DSO gaming.

“Steam Cloud is stored under userdata[account id] if you wanna check

It will also create encrypted copy of configlocalconfig.vdf.
This file contains your steam friends, their name history (groups you’re part of, are considered “friends”).

It seems friends might be used for friends suggestions, but I don’t even use that feature and it collects more than that.

While it’s called “localhistory” it is synced from cloud

It will read, encrypt and then write copy to: C:ProgramDataEpicSocialBackupRANDOM HEX CODE_STEAM ACCOUNT ID.bak
It will also keep historical entries there.”

Epic launcher collects Steam friends & play history