Jake, a security consultant from Basingstoke, UK, got his hands on a licensed emulator for z/OS over the pandemic , and considering that we have been in and out of lockdown for the past two years, started playing around with it for a fairly good portion of time. As someone who adores the 80s cyber aesthetic, he loves mucking around with it, but also there is nothing legacy about mainframes, docker, node js, python all your modern applications/programs are on there. Over the past year, he has found and reported a number of z/OS LPEs and RCEs vulns to IBM.