Your odds are very good stealing from my mailbox and not that bad burglarizing my house. Maybe you have much more vigilant police where you live. What’s more, unauthorized access to computer systems is also a crime.
The odds of getting caught robbing a single mailbox are not high, but if you do it on a large scale, it starts to get pretty risky.
The odds of getting caught attacking a Russian computer from the US or attacking a US computer from Russia are essentially zero for any scale small enough to not have major foreign policy implications.
