The crime rate of Sri Lanka is 39.95 which is actually pretty low. The first crime that is analyzed is using or dealing drugs which is at a moderate rate of 49.32. Then next is property crimes like theft and stealing. After that comes violent crimes like assaults and robberies. Bribery and corruption are on the high level though.
All in all, the country is safer than it has a reputation for being. But, the current advising for travelers not to venture there has more to do with terrorism than the people of Sri Lanka. Still, caution should be used. It is interesting that bribery and corruption are so widespread in the country. The government there most likely is to blame for much of that statistic.