On the 30th of April, the second PhD workgroup in collaboration with ACCSS and INTERSCT took place in Leiden. During the workgroup, many PhD students from different universities meet to discuss recent work and future research directions. The talks ranged from EU rules from cybersecurity patching to backdoor attacks in speech recognition passing through shadow IT, MPC, antifragility and fuzzing. The next PhD workgroup will take place in Utrecht in November. If you want to register for the next edition, please send an email to Cristian Daniele (cristian.daniele@ru.nl) or Arina Kudriavtseva (a.kudriavtseva@liacs.leidenuniv.nl).