Not much, though. People are now thinking that Cipher is Mihaly because of the timegap between the Belkan War and the Lighthouse conflict and the line that he shot down a lot of pilots of every generation, suggesting that he is very skilled.
Cipher is a MERCENARY! I don't see why EASA would hire mercenaries to fly their Su-30SMs when they have plenty of experienced pilots. Besides,it's really hard to find a guy like Cipher who has disappeared for almost 25 years. In those years,he could either have been dead or started a new life. Maybe both.