> Alexander Jurkschat.profile

Hobbyist IT Security Researcher

Finding security bugs for fun.

4CVEs published
2026Active since

.CVEs

.Limbo

Decentralized, post-quantum-secure communication solution.
Developing a custom protocol focused on cryptographic agility and resistance to future quantum-computer attacks.
[early stage - whitepaper to be completed, no poc yet]

Status: Actively in development

.Contact

PGP key for confidential communication:
Download publickey.asc

-----BEGIN PGP PUBLIC KEY BLOCK-----
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=pn6M
-----END PGP PUBLIC KEY BLOCK-----