Apple reportedly doesn't encrypt iCloud backups because the FBI said not to

Back in February 2016, there was a long, drawn out, and very public dispute between Apple and law enforcement agencies, where the Cupertino firm was asked by the FBI to unlock the iPhones owned by the San Bernardino shooter. Apple's response was that iPhones are encrypted and it said that it wouldn't help.
Read more: https://www.neowin.net/news/apple-reportedly-doesnt-encrypt-icloud-backups-because-the-fbi-said-not-to/?source=Snapzu