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Alexander Peslyak was born on 1977 in Russia. He is a computer security specialist and the Founder & CTO of the Openwall Project. He is best known for his publications on exploitation techniques, including the return-to-libc attack and the first generic heap-based buffer overflow exploitation technique, as well as computer security protection techniques such as privilege separation for daemon processes. He is also the author of John The Ripper and other Linux kernel hardening patches.