NGINX developer Igor Sysoev's former employer Rambler Group has entered a claim to ownership over the software's codebase leading to a police raid on NGINX's Moscow offices (archived). NGINX was initially released in 2004, and Sysoev started a commercial venture around the code when he left Rambler Group in 2011. When San Francisco based F5 networks spent 670 million USD to acquire Sysoev's firm earlier this year, it seemed to raise issues with Rambler's management as to what exactly Sysoev had been doing while on their payroll.