Markus's following
- Angelos T. Kalaitzidis0xShad3
- Aric Masmblur
- Billis ChBillisC
- ckrielleCkrielle
- BandwidthCloudMracek
- SpecterCryptogenic
- dhmosfunk
- Nikoselenikos
- ElvargThemSelf
- George Hotzgeohot
- georgesotiriadis
- H1R0GH057
- IonianCTF - Department of Informatics - Ionian University (IURC)ionianCTF
- johnbaumann
- Kernel PanicKernelPanicOfficial
- Kiriakos MourouzidisKiriakos41
- Leo TsaousisLAripping
- LowLevelLearninglowlevellearning
- Maldev AcademyMaldev-Academy
- Nikos Vourdasnickvourd
- Nicolas Noblenicolasnoble
- Nick Hatzisnikoschal
- NordicDevsNordicDevs
- Nordics GreeceNordicsGR
- NVIDIA CorporationNVIDIA
- NVISONVISOsecurity
- PeterLemon
- Alexey Kutepovrexim
- Roboskelroboskel
- Roboskel ManipulationRoboskel-Manipulation
- Sonic Retrosonicretro
- Panagiotis Chartast3l3machus
- Charalampis Kaklamanostmpzer0
- Antonios Tsepourastonytsep
- Linus Torvaldstorvalds
- George Dhmosxakhsun1c0rn-the-pwnie