James A.O'Brien Introduction to Information Systems Eleventh Edition 14 e-Business System Controls and Audits Processing Input Controls Output Controls Controls Fire walls Software ■■■■ ■■■■■■ Hardware ■■0■ a■■■■■ ■■■■■■ Checkpoints ■■a■■■ Security Codes Security Codes Encryption Encryption Control Totals Error Signals User Feedback Security Codes Storage Encryption Controls Backup Files James A. O’Brien Introduction to Information Systems Eleventh Edition 14 e-Business System Controls and Audits Processing Controls Fire walls Software Hardware Checkpoints Storage Controls Input Controls Output Controls Security Codes Encryption Error Signals Security Codes Encryption Backup Files Security Codes Encryption Control Totals User Feedback