From my experience I think mobile is more trusted and reliable in terms of security aspect. PC is an extension and it's vulnerable to any attack unlike the mobile in your phone -#-
returned to the individual user as well, indeed there are those who are used to using HP and he feels he can do it right, able to avoid hackers who might hack it. but some are also used to using a PC and feel safe from hackers.
I myself prefer to use a PC because it is easier and more able to manage how to use it better and more freely.
I believe, using any means is definitely not safe, if we don't use it very carefully. wherever and whatever way we use it, if we don't protect ourselves from being hacked by irresponsible people, it's certainly not safe either.
so try to do anything in the right and reliable way to avoid what we don't want.