"Big Blue’s doing this because “the possible financial and reputational damage from misplaced, lost or misused removable portable storage devices must be minimised.”
IBMers are advised to use Big Blue’s preferred sync ‘n’ share service to move data around."
But the advisory also admitted that the move may be “disruptive for some.”
https://www.theregister.co.uk/2018/05/10/ibm_bans_all_removable_storage_for_all_staff_everywhere/