The latest and most notable repository attacked by Nintendo's DMCA is the "sigpatch-updater" homebrew application by iTotalJustice (alongside all of its forks) just a few days ago. This isn't the first time for iTotalJustice however, since he got another DMCA takedown previously for the standalone "sipatches" repository before back in 2022. The application worked as its title implies, by basically updating the signature patches from within the Nintendo Switch console itself. This seems like yet another instance of Nintendo trying to stomp on any kind of possibility to run unsigned software on a homebrewed Nintendo Switch, be it actual homebrew applications or pirated ones. Even though the source code is down, the patcher itself seems to still be hosted in other websites, alongside other DMCA taken-down tools.
Unfortunately, "sigpatch-updater" isn't the only software hit with the latest attacks by Nintendo and its crusade against copyright-circumvention tactics, as Incognito_RCM by ScandalUK (this one still being live at the time of writing), kezplez-nx by shchmue, and another fork of Lockpick_RCM by SpaceNX have also been the target for Nintendo's DMCA, adding up to the instances of Nintendo going after homebrew projects for the Nintendo Switch, with one of the first reported being the original Lockpick_RCM, which got being taken down last year with a DMCA notice by Nintendo's lawyers, claiming the same copyright circumvention tactic.
With all of the current legal events taking place in regards to Nintendo both in regards to homebrew apps and Switch emulator Yuzu, it's most likely that they will continue to scour the internet and GitHub repositories for any kind of semblance of alleged copyright-circumvention methods, applications, or even guides to dump Switch keys of any sort. The legal clarity regarding fair and personal use when it comes to copyright-protected technological devices are still unclear to make any kind of counter-claim against their DMCA notices.
iTotalJustice GitHub DMCA notice for the "sigpatch-updater" repository DMCA notices for Lockpick_RCM, Incognito_RCM and kezplez-nx "sigpatch-updater" backup at Archive.org
