Csaba Fitzl

@theevilbit

macOS Security -- Trail running 🏃 -- Mountains ⛰ -- Tolkien fan For mountain pictures, go to: instagram.com/fitzlcsaba/

Hungary

theevilbit.github.io

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Csaba Fitzl
@theevilbit
Jun 14
Our next macOS Vulnerability Researcher trainings with @gergely_kalman will be: 📆 2026-10-12 - 15: Self-organized, 4 (!!!!) day training (Budapest, Hungary) 📆 2026-11-15 - 17: Objective by the Sea v9 (Hawaii, USA) More info here: macosvuln.training
Csaba Fitzl
@theevilbit
Sep 29
Good morning @macsysadmin ! Another can’t miss conference every year! 💙
Csaba Fitzl
@theevilbit
Sep 27
GIF
Csaba Fitzl
@theevilbit
Sep 23
🍎🐛 Found my second Notarization/GateKeeper bug. I can get something stamped and then modify contents and still accepted by the system. 🙈 Remember: Everything that was notarized was checked for malware by Apple... unless you can modify content as you wish. 🤷‍♂️
Csaba Fitzl
@theevilbit
Sep 23
People often ask how do I find bugs. I always tell them I learn how things work, and bugs follow. I spent the last month deep diving into the inner bits of GateKeeper and all the related technologies. It's MASSIVE! I still feel I'm scratching the surface however bugs starting
Csaba Fitzl
@theevilbit
Sep 23
🍎🐛 Found my second Notarization/GateKeeper bug. I can get something stamped and then modify contents and still accepted by the system. 🙈 Remember: Everything that was notarized was checked for malware by Apple... unless you can modify content as you wish. 🤷‍♂️
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Csaba Fitzl
@theevilbit
Sep 23
🍎🐛 Found my second Notarization/GateKeeper bug. I can get something stamped and then modify contents and still accepted by the system. 🙈 Remember: Everything that was notarized was checked for malware by Apple... unless you can modify content as you wish. 🤷‍♂️
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