Two trips to Italy in two years, passing through Sicily, Dolomites, Tuscany, and some other cities. Personally, I feel that the security in Italy is not a big problem. Tourist attractions are always crowded, which is unavoidable anywhere. Just be mindful of your belongings, keep some loose change in your pocket, and don't expose large amounts of cash. We added a small combination lock to our backpacks for extra security. Thieves also choose their targets, just like in our own country. I've seen many foreigners leaving their bags far away while taking photos, and their belongings were not stolen. There are armed police guarding various attractions in Italy, so I didn't feel unsafe at all ?
Italy Q&A