The average K-POP fan is common with the term "sasaeng".

But how many of them are actually out there? Unfortunately, more than expected.

From what the video noted - it's common for sasaeng fans to sell the privateinformation about idols that they've received by committing felonies. They also sell private pictures and other scary things they've gotten their hands to by obsessively stalking and harassing different idols.

The worst thing about it is that by the looks of it - all of them have developed, in a way - an illegal business with a large and active clientèle (that also consists of sasaengs). Most of them could be easily found all over different social media platforms and more and more people are actively seeking criminal purchases that violate the idols' privacy. 

If you ever come across a sasaeng account or an account that sells illegal information - instead of reporting it, immediately send the accounts' usernames to the companies whose idols are involved so that they can get sued or at least blacklisted. The more people get away with it, the more harrased the idols will be in the future. Obsessive stalking could lead to potential harm of an idol's life. Please do not take this topic lightly.