Solar Designer

Alexander Peslyak (Александр Песляк) (born 1977), better known as Solar Designer, is a security specialist from Russia.

Peslyak is the author of the widely popular[2] password cracking tool John the Ripper.

[4] He has spoken at many international conferences, including FOSDEM and CanSecWest.

He wrote the foreword to Michał Zalewski's 2005 book Silence on the Wire.

In 2015 Qualys acknowledged his help with the disclosure of a GNU C Library gethostbyname function buffer overflow (CVE-2015-0235).