As part of the Prime Minister's investigations, in which he was tried and sent to prison, evidence was analyzed and identified from a government ministry for a long period of time, by restoring the Exchange software to relevant versions. This was done using backup tapes and the creation of diaries to be presented as evidence in court. Like ministers and prime ministers, every serious company must know how critical its information can be, even when it all seems impossible. Due to persistence and some creative actions by the firm's partners, the relevant information about the Prime Minister and others was exposed, even though it was old, while colleagues in the profession raised an eyebrow and did not believe that valid digital evidence could indeed be found and produced under these circumstances.