If your application does not have a specific reason, you can refuse it:
NSAllowsArbitraryLoads true , Apple , , - . NSAllowsArbitraryLoads , ( , - ..). Apple - , , ATS URL-, .
URL-, TLS 1.2, , NSAllowsArbitraryLoads YES. NSURLSesssion WWDC.
NSAllowsArbitraryLoads. Apple.