Automated Process has the following risks -
1) Security Risk - Sometimes the system may get infected with virus and other malware programs . This may result in loss of data and also theft of data . The virus or infection which may have spread through a pen drive or wirelessly would or may cause loss of significant amount of money .
2)System failure - Sometimes the system tend to fail either due to mechanical or software problems . When this happens you will have to rely on manual accounting . But the problem arises here because either you may not have sufficient amount of staff or you may not have the staff who know manual accounting correctly (calculations , vat amount , service tax percentage etc . )
Automation control system do reduce human error significantly . Without them it would be impossible to perform work at the current level of speed . Manual accounting is slow and is prone to error which cannot be made in current competetive world when one slight miscalculation could cost a lot of money and several jobs .
The best example for automated system success are the banks themselves . Not only it has made transactions a breeze but also made it easier to record data and perform needed changes in a very flexible manner .