Naver Webtoon, for one, has rolled out an in-house tool named Toon Radar that embeds invisible watermarks in each chapter. When a pirated copy turns up online, the watermark allows the company to trace it back to the specific account that downloaded it.



This seems like it would be very easy to circumvent
Yep. You’ll need 3 accounts, to decipher the canary watermark, and implement countermeasures.
Some teams already do.
But, they still use FashCorp.😒