I saw them do A5/1 live cracking on stage in Netherlands. It is amazing what you can do with sheer determination. Learned a lot from their talks on GSM. USB E1

I saw them do A5/1 live cracking on stage in Netherlands. It is amazing what you can do with sheer determination. Learned a lot from their talks on GSM. USB E1 is holy grail when it comes to E1 interfaces. Before that meant a PCI card, which excluded all laptops and SBCs. And it usually required some pretty specific kernels and modules to be installed.