The Epic Games Store client copies Steam data after it is installed. The data copied contains names of friends, which games were played and how long those were played. Epic Games confirmed the collecting of this data.
According to a recent Reddit post, the Epic Games Store client contains "spyware" that copies Steam's localconfig.vdf file after it is installed. The copied data contains names of friends, a list of recently played titles and how long those titles have been played.
Epic Games VP of Engineering Daniel Vogel confirmed the findings on the social media platform, but stated that the information will only uploaded to its servers if players decide to import friends. CEO Tim Sweeney also confirmed the findings, stating that it is a "remnant left over from our rush to implement social features."