Apple’s servers log every connection attempt. If your modded client sends unexpected API calls or attempts to bypass authentication, Apple’s fraud detection systems will flag your Apple ID. A ban often means:
Users wanted to bypass the $0.99 per song model. Early modded iTunes attempted to intercept downloads. modded itunes download
While individual downloaders are rarely prosecuted, distributing or using modded software violates the Digital Millennium Copyright Act (DMCA) and similar laws worldwide. More practically, Apple actively detects modified clients. When the software phones home to Apple’s servers with altered signatures, Apple can: Apple’s servers log every connection attempt