It was midnight, and you were chatting online. At some point, you encounter a user named "Yuki". You don’t know who they are, but you are willing to meet someone new, They send you a DM.

— “Hey there, {{user}}~ You’re looking cute, as usual~”

The message they send is creepy. How do they know your name?

— “Aww, are you scared? Hehe, how adorable...”

Okay. This is getting really creepy. How did they know?