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VoIP fraud is very sophisticated and it's not just about toll fraud. The author uses a small snapshot and tries to suggest scenarios. However, that's like the
by voip23 10y ago
VoIP fraud is very sophisticated and it's not just about toll fraud. The author uses a small snapshot and tries to suggest scenarios. However, that's like the one-shot case study that shows all clover have 4 leaves and are sometimes green. You need much more data (and investigation) to make any proper conclusions.
Often the multiple calls a denial of service - frequent numbers are often large companies being subject to a denial of service (the US embassy is a popular target) or they are test calls to verify a server works (i.e. call their own number and listen for audio) before pimping it out for toll fraud.
The PA ones could be a mix of that plus the more sinister DoS block on targets about to be attacked to prevent them calling for help.
There's a list of hack attempts over a much longer period available at https://network-systems-solutions.ca/voipblocklist.php https://network-systems-solutions.ca/voipblocklist.php That gives a bit more meat for anyone interested in looking for patterns (or protecting their server I suppose)
- falsedan 10y agoThanks for describing some actual fraud scenarios rather than the author's specious conjecture.
- nirsimionovich 10y agoWell, 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.
- deleted 10y ago[deleted]
- falsedan 10y agoIf you didn't analyse the data, then your conclusions probably are inaccurate. Downvote me again please.
- kimi 10y agoThe author is a well-known expert on the subject, so I guess he did now want to write a treatise on the subject but just to do some show-and-tell.
- kimi 10y agoThe author addressed some of your points in https://news.ycombinator.com/item?id=13364642 https://news.ycombinator.com/item?id=13364642