Fraud and corruption in the public sector have two elements - the physical act (actus reus) and the state of mind (mens rea). Corrupt practices are actions intended to improperly influence others, while fraudulent practices knowingly mislead to obtain benefits. In the UK, detected fraud is estimated at £27.6-72.9 million annually out of £306 billion in expenditures, much lower than estimates of 3-5% in other countries. Typical fraud schemes include theft, fake invoices, false reimbursements, ghost employees, ineligible benefits, and bribes. Fraudsters may exhibit extravagant lifestyles, anomalous IT activity, and personality traits like resentment and addiction issues.