During their investigation, the ministry also announced that its employees' financial records were being examined to crosscheck income statements and real estate holdings.
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.