«Introduction to malware reverse engineering» by Sergey Kharyuk aka ximerus
«OWASP Top 10 hands on workshop» by Stanislav Breslavskyi
«Applied cryptanalysis everything else» by Vladimir Garbuz
«Introduction to malware reverse engineering» by Sergey Kharyuk
«How to pwn Russian Android botnet» by Dmitriy
«How to start in web application penetration testing» by Maxim Dzhalamaga
«Applied cryptanalysis stream ciphers» by Vladimir Garbuz