More details (in Italian): https://www.wired.it/article/agcom-multa-cloudflare-oltre-14...

TL;DR: since 2013 in Italy we've had a controversial regulation that compels internet providers to block access to certain IP addresses when the communication authority flags them. The problem, of course, is that if a copyright infringing websites shares it's IP address with legitimate sites, those sites become collateral damage.