Selah- It is hard to tell as even auditors do not always pick all the errors given the inherent limitation of the relationship between the auditor and management. Manipulation of records is fraud like any other which is followed by a systematic process of cover up. However,if you have time and ability,there are analytical techniques you could apply to detect manipulation of accounts but these require analysis over a number of years and they do not guarantee success. The techniques include comparing sustainable cash flows to operating profits. Whereas management can manipulate profits,it is hard to manipulate the cash flows as the cash flow figure must agree to cash at bank (or at least reconciled). Over time,if the cash flows lag behind the operating profits,it could be a sign of fictitious sales that are not being converted into cash. There are other ways management could boost profits e.g. valuation methods and use of estimates in the accounts. Again you could look at the unrealised gains/losses from these valuation methods and you can adjust for them if they are not based on external market data- look at consistency of use of these methods etc. The hardest bit of it all is the off balance sheet items and management can choose to omit there completely and therefore you might not pick them in your analysis. The biggest financial reporting fraud revolve around off-balance sheet items – from Enron,Worldcom etc,companies are able to hide losses through these items. Although there is push to have most of these items on balance sheet,it is possible for management to omit them and for analysts,auditors,financial journalist to fail to pick them up.