Alexander Peslyak
Senior Principal Security Engineer at Openwall, Inc.
Slovenia
Summary
🤩
RockstarAlexander Peslyak is a seasoned security engineer and entrepreneur with 26 years of experience, currently serving as Senior Principal Security Engineer at CIQ while continuing to lead Openwall as its founder and CTO. Based in Slovenia, he has steered the Openwall Project since 1999, blending deep technical expertise in system hardening and security tooling with long-term open-source stewardship. His career reflects a rare combination of product-focused leadership and sustained hands-on engineering across vulnerability research, secure system design, and community-driven security projects. Colleagues know him for turning hard security problems into practical, deployable solutions and for building enduring open-source infrastructure rather than short-term prototypes.
26 years of coding experience
English, Russian, Slovenian
Github Skills (200)
mersenne-twister10
enforcement10
cracking10
authentication10
key-derivation10
interpreter10
security10
crypt10
ubuntu10
openmp10
qubes-os10
gpu10
kdf10
passphrase10
pam10
Programming languages (23)
Github contributions (5)
openwall/php_mt_seed
Sep 2012 - Aug 2017
PHP mt_rand() seed cracker
Contributions:33 commits, 3 pushes, 2 tags in 5 years
phprandseedcrackersimd
openwall/phpass
May 2005 - May 2017
Legacy password hashing framework for PHP applications needing to support or having previously supported PHP below 5.5
Contributions:9 reviews, 18 commits, 7 PRs in 12 years 1 month
phpphp-applicationpasswordhashinghash
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