Re: [78RATS] razor wire
Depending if it's woven together or just one continuous roll, one can just cut it, separate it, gain access, then re-weave it back together giving the illusion that it's been untouched. I know I never really investigate our security fence anymore than a glance when it looks good. Just be intelligent about making it look good afterwards.
Although just staying away from jumping all together is the best bet.