I think every country is different, and while in Italy on a fiscal trial it's you that you have to prove that you are innocent and not the state that has to prove that you are guilty, it's still a civil trial and that normally takes 10 years to complete. Then they have to get︀ your money, that's why mostly all big famous trials ( Valentino Rossi and such )︁ ended up with an off the court agreement. So I'm certain that they are looking︂ on the internet, but I''m also certain that there is a certain threshold you have︃ to cross to make you a fish that they want to catch, because catching you︄ requires work, and there might be bigger fishes to catch. Also in italy delation is︅ not common, while in other countries it's the norm, because in italy mostly everybody performs︆ some degree of fiscal crime, and even if you don't, if you want to live︇ a quiet life, you mind your own business.
And of course they start at the︈ top: if you paid taxes in italy for 10 years, and they know how much︉ money you were declaring in italy, they have more data on you: that's why they︊ offer you a 70% tax discount if you go back to working to italy, because︋ they f**k you in the long run. Most of the controls is on people putting︌ residency back in Italy after living abroad. A friend of mine who owns 4 houses︍ in London, went back to milan with the fiscal discount, when they discover the houses︎ and the fiscal discount is over, they will f**k him well...
And of course they start at the︈ top: if you paid taxes in italy for 10 years, and they know how much︉ money you were declaring in italy, they have more data on you: that's why they︊ offer you a 70% tax discount if you go back to working to italy, because︋ they f**k you in the long run. Most of the controls is on people putting︌ residency back in Italy after living abroad. A friend of mine who owns 4 houses︍ in London, went back to milan with the fiscal discount, when they discover the houses︎ and the fiscal discount is over, they will f**k him well...