Shadow IT is a growing obstacle that often goes undetected because corporate employees are using cloud services that arent authorized by IT. By 2020, one-third of successful attacks experienced by enterprises will be on data located in shadow IT resources. The growing presence of shadow IT invites both security and compliance risks as organizations store or share their data within unknown cloud services. Managed cloud access security brokers (CASBs) help to remediate shadow IT through a combined solution that delivers expertise of a managed security services provider and the data protection capabilities of a CASB.”]
Source: https://securityintelligence.com/spotlight-your-data-within-shadow-it/