Seems that there is No privacy for coinbase users, they are spying on people, but if the KickAss owner was using hardware wallet like trezor and ledger can they still track him and their users? Btw how apple helped to track this guy?
Apple provided records that show that an iCloud (me.com) account was used to purchase something on iTunes, and that account's IP address also accessed the Kickass Facebook page. Also the iCloud account's email address was used to register a Coinbase account that contained Bitcoin donations from Kickass.
https://www.engadget.com/2016/07/21/kickasstorrents-apple-facebook-homeland-security/Jared Der-Yeghiayan, a special agent with the US Department of Homeland Security, was tasked with tracking the man behind KAT
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Der-Yeghiayan was able to link the email address found in the WHOIS lookup to an Apple email address that Vaulin purportedly used to operate KAT. It's this Apple account that appears to tie all of pieces of Vaulin's alleged involvement together.
On July 31st 2015, records provided by Apple show that the me.com account was used to purchase something on iTunes. The logs show that the same IP address was used on the same day to access the KAT Facebook page. After KAT began accepting Bitcoin donations in 2012, $72,767 was moved into a Coinbase account in Vaulin's name. That Bitcoin wallet was registered with the same me.com email address.