I realize I am actually an idiot but I didn't check how dangerous it really is before doing it. Anyway all those services seemed legit.
I sent passport id photo for kyc on skrill and paxful, and also bitcoin exchanger in estonia(EU). I picked the last one on popular site bestchange.com, it is working for 1.5 year...
Do you think I have to change passport or this is just a panic? I am thinking about this all for several days...
In my opinion, it's better to avoid sending such sensitive info on Internet, unless you don't have choice and company have good reputation.
Skrill is good and stable company, with good reputation but I'm not sure about paxful or exchanger in Estonia.
Please check their reputation, review their info and if everything ok you don't need to change your passport.