That incident led to the RTL-SDR enthusiast blog to issue a warning to current Ukrainian SDR enthusiasts. Stan was arrested by Russian Federal Security Services and is currently in prison in Moscow, Russia on charges he is a Ukrainian spy. Stanislav Stetsenko was a resident of Crimea and regularly monitored ADS-B traffic. However, there have been warnings about what running a SDR available to the Internet could mean for Ukrainian citizens. As of this writing, there are still WebSDRs active within Ukraine. SDRs located in Ukraine give you the ability to monitor the airwaves from the middle of potential military action.
Web-based Software Defined Radios (SDR) have exploded in popularity in recent years. Mickey Gurdus in his shack listening to radio transmissions in 1991.