https://www.techdirt.com/articles/20191212/09373543564/copyright-trolls-go-mostly-silent-us-federal-courts.shtml

Readers here will be familiar with the practice of copyright trolling and the toll this extortion by threatened litigation has had on the public and the court system. You will also be aware that a huge chunk of copyright trolling efforts in America have been undertaken by two companies: Malibu Media and Strike 3 Holdings. Both companies have had setbacks as of late, between ownership and investor issues, and a series of both losses in court and judges who are finally starting to catch on to the shady way these trolls attempt to extort money from people with scant evidence.

It is perhaps in part due to those struggles that both companies have essentially gone dark in federal courts as of late.