I've been seeing something similar targeted at a healthcare client over the last few months. Same exact situation where patients are calling some random number that isn't in our systems, but it gets forwarded to our systems for a few minutes/hours. Because this particular client has 30+ locations, we started noticing it when calls were being misrouted to other locations. (i.e. patient calling Houston office gets routed incorrectly to the San Francisco office) We initially suspected a 3rd-party marketing service that was issuing semi-temporary numbers to use in Facebook ad campaigns, but a decent amount of numbers didn't line up. I also arrived at the possibility of this being used to monitor the calls for credit cards, social security numbers, or other private information. I'm still gathering data from end-users to try and track it down.
-A On Thu, Nov 11, 2021 at 8:13 AM LICT VoiceOps via VoiceOps < [email protected]> wrote: > One of our clients is a small private school. > > For the past month, the school has been getting calls meant for other > schools in the general area (within 20 miles or so) > > We have been able to get limited information from the caller like > what number did they dial. They are definitely not dialing our client's > DIDs. > > It seems that they are dialing a number that they found on an internet > search, and the call is then forwarded to one of the DIDs at the school. > > We are seeing matching CDR records for our PBX and our carrier's CDR > billing reports, so it does not look like a SIP hack. > > It seems that the number is forwarded for just a few minutes to our > school, then goes dead, or rings busy, no longer forwarded to our client. > > The pattern here is that the caller obtained the number from an internet > search of a school in the area. These are real people calling, as we have > been able to call them back and verify. The callers who reached our client > are as bewildered as we are. > > I am sure this is some sort of scam -- but I can't figure out what it is. > Are the scammers recording the lines and seeing if they hear financial > information? Seems like a longshot, but that is the only thing I can think > of. > > I know there is little that can be done to prevent a call being forwarded > to you upstream of the carrier, but would love to hear anyone's thoughts > about this. > > > > > _______________________________________________ > VoiceOps mailing list > [email protected] > https://puck.nether.net/mailman/listinfo/voiceops >
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