A Russian software company by the name of Arusoft may have cracked 4K Ultra HD Blu-Ray DRM [myce.com]. All it requires is a PC with a Blu-Ray drive and a $235 piece of software.
At the beginning of this week a new mysterious company with a new mysterious software popped up, Arusoft with DeUHD. The company claimed that its software would be able to copy Ultra HD Blu-ray discs. In a statement to us, the company even stated that it considered AACS 2.0 to be cracked [myce.com].
With a license of €200 ($235) there weren’t many people who wanted to test and potentially lose their money. Therefore, the company handed out 5 licenses to randomly selected users and the first results are in.
To sum up the results: It works, but they don't appear to have cracked AACS 2.0 itself. Instead, the DeUHD developers appear to have found working keys for specific films.