A big problem with network connections is that you don't know if the data you send will arrive at its destination exactly the same way. In this way, packages could be unchanged, lost or even new ones inserted on the way. With PcapDiff it should now be possible to detect various errors, problems or attacks. For this purpose, a recording of the traffic is made on the transmitter and receiver side and these two pcaps are compared. Of course, the program is especially interesting for system administrators, who can debug and analyze their networks with it. It is also aimed at security specialists who can use it to evaluate their own developments. But also for the "normal" user PcapDiff is of interest, because everyone is affected by censorship, errors and attacks and PcapDiff uncovered these.