Would someone steal your drone? Looks like its very possible. So all your data would fall into the wrong hands!
I guess this would happen to any new technology. The worry is if your pacemaker or your insulin pump would be hijacked by a malicious person and reprogrammed to do something else that might kill you. No safeguards are safe with new technologies as people get to use them and others try to find out what their limits are.
Like anything else that humankind has invented I guess there is a good and bad side to everything. The first cutting tool was probably used for cutting up meat before someone quickly realised that it could also be used to kill another human. Nothing much has changed!