Common defences to financial crimes charges can vary, but often the defendant relies upon showing a lack of intent, a mistake, or identity. In addition, challenging the evidence presented on technical grounds (such as illegal search and seizure) may be utilized as potential defences. It is ultimately up to the court to determine if the prosecution can prove its case beyond a reasonable doubt. This is often a document-heavy task that takes place while witnesses are subject to close examination in the courtroom.