Sergey Toshin

Sergey Toshin is the CEO and Founder of Oversecured, a company dedicated to enhancing mobile app security since January 2020. Through the Oversecured blog, Sergey trains developers in secure coding practices. Prior to this role, Sergey served as a Security Researcher and Bug Bounty Hacker at HackerOne from January 2016 to January 2020, where extensive research was conducted on the security of Android and iOS mobile apps. This role involved collecting statistics on common developer mistakes and automating their detection, resulting in the foundational developments of the Oversecured product. During tenure at HackerOne, Sergey submitted hundreds of vulnerability reports to over 100 companies.