From TorrentFreak [torrentfreak.com]:
Warner Bros. and Intel's daughter company Digital Content Protection have sued a hardware manufacturer that creates devices enabling consumers to bypass 4K copy protection. The devices, sold under the HDFury brand, can be used by pirates to copy 4k video from streaming platforms as well as other HDCP 2.2 protected content.
Starting a few weeks ago [Chinese technology company LegendSky] launched a range of new devices [hdfury.com] which allow users to strip the latest HDCP encryption. This hardware sits between a HDCP-compliant source device and another device, allowing it to pass on a “stripped” 4K signal.
The Hollywood studio and DCP argue that these devices violate the DMCA’s anti-circumvention provisions and should no longer be sold to prevent further damage.