Recently, a group of modders launched the now-defunct online shooter Concord on a user server and showed gameplay.
The video was not public but accessible via a link. However, information about this project quickly spread, and soon they received a DMCA ("copyright infringement") notice on YouTube.
Sony is not directly mentioned in the notification, but players assume that this company is behind it (previously, MarkScan blocked videos on another Sony franchise — the Bloodborne PSX project was under attack).
This video is no longer available due to a copyright claim by MarkScan Enforcement
The developers have switched their Discord* community to private mode and temporarily suspended sending invitations to test the Concord server. There is no report of a complete shutdown of the project yet.
- *(violates the requirements of the legislation of the Russian Federation)