Despite the fact that four of the lawyers linked to porn-trolling enterprise Prenda Law have been forwarded to criminal investigators, the organization is charging full-steam ahead with one of its last cases: LW Systems v. Hubbard. The case is an Illinois state lawsuit making vague allegations over computer hacking against a defendant with a lawyer who some have said is actually in cahoots with Prenda.

The case landed Prenda an incredibly broad order that allows it to subpoena subscriber information from practically any ISP in the country. So Prenda lawyer Paul Duffy has used that power to launch a barrage of threat letters telling people to pay up or get sued. In mid-April—just a week after Duffy pled the Fifth to avoid testifying about his actions in Prenda litigation—his law firm was sending out demand letters asking for $2,400.

Now, the anti-Prenda blog Fight Copyright Trolls has published a newer version of the letter, which also appears to be signed by Duffy. The new letter has gone out under the name of Anti-Piracy Law Group, and it suggests that letter recipients might have their neighbors or family members contacted about the allegations in the lawsuit. Since those accusations concern adult content, that action seems like a threat that could increase the embarrassment factor for recipients.

Duffy writes:

The purpose of this step is to gather evidence about who used your Internet account to steal from our client. The list of possible suspects includes you, members of your household, your neighbors (if you maintain an open Wi-Fi connection), and anyone who might have visited your house. In the coming days we will contact these individuals to investigate whether they have any knowledge of the acts described in my client’s prior letter.

The new letter also makes more specific allegations about digging into the electronic history of targets. It warns against destruction of evidence, including "files on your computer, your credit card purchase history, and your Google search history."

The letters don't specifically mention that the firm will be talking to the neighbor about pornography accusations. However, LW Systems identifies itself as being in the adult content business within the complaint, and the letter says that LW Systems' content has been widely stolen

One lawyer who has been named as a "senior manager" of Prenda and its affiliates, John Steele, spoke to Ars last week and denied any involvement with Prenda. Steele did acknowledge he's paid a "modest flat fee" as an employee of Livewire Holdings, which owns LW Systems.

Ars contacted Duffy to ask about the new letters but hasn't heard back.