To be more accurate, I've shown a snippet describing only 48 hours of "suspected attacks" that were performed to a single server. The overall network contains 6 different honeypots around the world, which had been changing IP numbers once every 7 days for the past 2 years.
Just to give a rough idea, the overall number of attacks, that specific server received in the month of December was over 180,000 attacks, with about 60 distinct attack sources and about 8 different attack patterns. Analysing all the data is far beyond my current time capability, simply because I'm dealing with other subjects.
It is true that you can't deduce any type of specific reasoning from the displayed information, as the data set is very much limited. However, it shows that as much as Skype/Facebook/Whatsapp are popular, the popularity of VoIP hacking and hijacking still proves this is a booming market with much financial gain.