It’s safe to say Cisco has spent somewhere in the region of $4 billion in the space of just three years solely on buying up security companies – and it will soon be adding $293 million to that sum as it plans to acquire cloud-based security start up CloudLock. CloudLock’s technology uses APIs to monitor the operations of data and content stored on cloud applications such as Office365, Google Drive, Dropbox, AWS, Slack and Salesforce, or alternatively, an on-premises server – it calls this cloud access security broker (CASB) technology. Employees using their own devices to access company documents, data or content in various settings on unsecured networks brings with it a wave of security and privacy issues. So CloudLock…