You won't find hacks or exploits inside of logs mate.
Logs aren't like putting a heart monitor or oscilloscope to your phone--forced/external measurements.
They're more like: "I hope this dude tells me what i want to know."
A programmer has to go out of his/her way to put this into their code, for example:
Log.d(Main, "Redrawing Map")
A hacker will not add into their code: "I need to make sure to leave a trail of bread crumbs of me downloading malware."
You won't get hacked mate. Enjoy life and the phone :)
Relax the shoulders; take some long, deep breathes; and saunter through the forest <3