For example, one such programme was described on frame 70067a, and 70067b, while frame 70067c gave the number of subsequent frames containing the programme, and a crosscheck sum.
Special software enabled this crosscheck sum to be compared with a value calculated from the result of downloading all the required frames in order to verify a successful download.
During their investigation, the ministry also announced that its employees' financial records were being examined to crosscheck income statements and real estate holdings.