I’m a cybersecurity expert, researcher, and ethical hacker based in Germany, with over 25 years of experience. I work as a cybersecurity expert at the German headquarters of a company listed by Fortune as one of the top 500 in the world.

My expertise is backed by several certifications, including ISO 27001 Lead Auditor/Implementor, Ethical Hacker Master (CEH Master), Certified Penetration Testing Professional (CPENT), Certified Hacking Forensic Investigator (CHFI) and Microsoft Cloud Security.

Free help for charity organizations

I offer my cyber security expertise to charities free of charge. If you need help to protect your organization from existing or imminent cyber threats, please do not hesitate to contact me by email, either in German or in English.


Feel free to contact me by email in either German or English at contact@thomasfrey.pro, or using PGP-encryption at encrpyted@thomasfrey.pro.


PGP or “Pretty Good Privacy” is a great way to send securely encrypted and authenticated mail. You will need my public PGP key to email me securely, available here.

Verify my PGP fingerprint to be sure it’s me:
01E7 819D 9C13 DB49 4CCF 909A 4055 977F 2134 1ED0