So many security vendors and app providers warn us users against jailbreaking iOS devices. The fear mongering is often very dramatic. However I can't find real world examples of actual problems caused by jailbreaking. Have they all been covered up or is it all nonsense?
Specifically I'm interested in knowing whether all those media apps that refuse to run on jailbroken devices are actually really at risk. Can, for example, media downloaded for offline use from something like Spotify, BBC iPlayer, or Amazon Video be extracted and shared? I'm not looking for a how-to; just some proof that there's really something to be worried about for the third-party app providers that justifies the near hysteria presented in things like Europol's “MOBILE MALWARE - TIPS & ADVICE TO PROTECT YOURSELF” (dated 24th October 2016).