Re:'One Ring' Phone Scam
by mschuster91 on Monday May 06, 2019 @04:40AM
(#19837760)
> the only header is the originating number, which can be un-traceably spoofed at the originator
That's wrong, phone signalling systems always specify the originating number and it cannot be spoofed. The key thing is that only 911 responders and similar lines have the CLIRIGN flag set on their lines which means that the spoofed number transmitted via CLIP is ignored and the real one used instead.
In addition victims of e.g. threat calls can have the MCID flag set on their line which makes the provider systems log all call information for later retrieval by police.
That's wrong, phone signalling systems always specify the originating number and it cannot be spoofed. The key thing is that only 911 responders and similar lines have the CLIRIGN flag set on their lines which means that the spoofed number transmitted via CLIP is ignored and the real one used instead.
In addition victims of e.g. threat calls can have the MCID flag set on their line which makes the provider systems log all call information for later retrieval by police.