Hi Nick, Great thread. As a UK network I'd say +4487, +4490, +4470. These are UK Premium/Special/Personal numbers and there is a tonne of international traffic seeking these out. We continually advise customers not to touch it unless it is organic UK retail traffic as there is no need for anyone outside the UK to dial them. Traffic will typically be repeated 1-4 second calls to the same number on which the perpetrator is receiving an outpayment. They exploit the fact that there are hundreds of ranges, all billed differently and that somebody somewhere in the supply chain might not be current. We typically see those customers who ignore our advice forgetting about the connection charge and making a whacking loss as a consequence on what seemed too good to be true. We ourselves are exposed when we don't keep up with tariff changes on established number ranges or, dare I say it, we aren't informed. So, keep in mind, these are domestic numbers and any international volume to them is fishy however good it looks. Simon Keep up with the latest news from Simwood: http://feeds.simwood.com/SimwoodNews On Fri, Oct 23, 2009 at 6:18 PM, Nick Vermeer <nvermeer at rgts.com> wrote:
I?d like tap the collective knowledge here for some fraud prevention and detection resources.
Anyone have any information they can share on common fraudulent calls (i.e. Countries and associated digit strings)
What metrics have worked best to match to detect fraud before it becomes a significant cost?
What platforms have people used to analyze the raw data?
Links or RTFM pointers appreciated J.
*Nicholas Vermeer*
(ph) +1.212.282.2512
(fax) +1.212.282.2668
(email) *nvermeer at rgts.com*
*Rockefeller Group Technology Solutions, Inc.*
*1221 Avenue of the Americas*
*New York, NY 10020-1095*
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