Xero is one of the pioneers of cloud accounting and the security of accounting data stored in and transmitted via the cloud is significant whereby Xero's cybersecurity is crucial to the willingness of accountants and businesses to use the platform. 

Required:

Explain how the Xero application uses multiple levels of security to safeguard accounting data against cybercrime and unauthorised access. You must undertake research to identify five layers of security and offer a brief explanation for each layer as part of your answer.