There are a few improvements Australian telcos could really do with putting in.. STIR/SHAKEN <https://en.wikipedia.org/wiki/STIR/SHAKEN> for caller ID spoofing is one.. ENUM is another that I think would be useful[1] (they did a trail about 15 years ago now[2] and, well, we don't use ENUM - so that tells you how that went)
I was surprised to see Telstra in the news for blocking spam/scam calls the other day.. They might be making improvements, yes - but we are still behind globally on this Side note: is there anything like AusNOG but for telco? And/or any forums/sites/mailing lists where people from the Australia telco industry discuss telco topics? AusNOG and this guys blog are probably the only places I've seen/heard anyone discuss the telco industry (if you want to know how number porting works at all - short from reading the actual rules/laws - that blog has a some great details (link <https://nickvsnetworking.com/anatomy-of-local-number-portability-in-australia/> link <https://nickvsnetworking.com/more-porting-notes/>)) [1] I see ENUM as potential to assist/solve the fact that you have a single point of failure for inbound carriage.. If you have a TFN that can send calls between multiple telcos, then the TFN is the single point of failure.. Wouldn't be bad if porting becomes easier as a result of ENUM either.. [2] There are many dead links on the internet about this trail.. These [3 <https://lists.ripe.net/pipermail/enum-wg/2005-May/000326.html>][4 <http://www.rogerclarke.com/DV/ENUM0507.html>] are the ones that I could find that work/had anything mildly interesting, and pointed me in the direction of Vince Humphries from ACMA who was able to provide some more insight into the trail (which I haven't completely read yet, but thank you Vince if you're out there!) > On 21 Feb 2021, at 9:35 pm, Tim Dooley <[email protected]> wrote: > > Mind if I ask when this was, and who your au provider was? I know Telstra are > properly restrictive > > Get Outlook for Android <https://aka.ms/ghei36> > From: Damien Gardner Jnr <[email protected]> > Sent: Sunday, February 21, 2021 8:05:23 PM > To: Jake Anderson <[email protected]> > Cc: AusNOG Mailing List <[email protected]>; Mark Andrews <[email protected]>; > Tim Dooley <[email protected]> > Subject: Re: [AusNOG] "Telstra" scammers > > At ${job-1}, we had a bunch of VOIP services at offices in AU, NZ, US, GB, > IE. AU was the ONLY place where we could present ANY caller ID we wanted. > Everywhere else our VOIP provider required a copy of our phone bill proving > we owned the phone numbers we wanted to present as caller ID, if we had not > ported those numbers to the VOIP provider. And that had to be refreshed > every 12 months. > > It’s always blown me away how loose .au is on handling spoofing on phone > services. > > —DG > > On Sun, 21 Feb 2021 at 9:00 pm, Jake Anderson <[email protected] > <mailto:[email protected]>> wrote: > You know how pretty much everybody seems to have implemented spoofing > controls on IP's exiting their networks? > People need to get on that for the phone side (whilst yes exceptions > should be allowed you really should need to prove it's your number). If > it needs regulation to force it then so be it. > > Also, I ask them if their mother knows they are criminals trying to > steal from old ladies. > They get very upset by this as a rule. > > My 95 year old grandmother is still getting 3-5 "nbn your phone will be > disconnected at midnight" calls per week. > > > On 19/02/2021 7:54 am, Mark Andrews wrote: > > Well at least with the NBN rollout basically done I haven’t heard from > > “Nicole from NBN” > > saying my phone is going to be cut off if I don’t do something in a while. > > > > Whats needed is a simple way to report “the last call to this line was a > > scam” so the > > calls can be traced back to their source along with a legislated > > requirement to follow > > the call trail back to its source. I get several calls like this a day > > from > > “Telstra NBN”, “Mastercard Visa”, “E-Bay and suspicious iPhone purchase”, > > etc. It’s > > so common that my wife looks at the caller-id and says “It’s your > > girlfriend calling > > again” from the number of times Nichole called. > > > > Unfortunately I need to field calls from unknown numbers for new members > > for Scouts, etc. > > > > I’ve even had them callback and ask why I hung up on them. They really > > don’t like it when > > I call the “crooks”, “criminals”, “scammers” etc. > > > > Mark > > > >> On 18 Feb 2021, at 21:50, Tim Dooley <[email protected] > >> <mailto:[email protected]>> wrote: > >> > >> While telecom companies such as Telstra are required to limit outbound > >> calls from their SIP Trunks (ensuring you own the number you're trying to > >> present), there are "IT" companies which offer SIP trunks without being a > >> telco, this means they do not have to follow the same guidelines. > >> > >> Just 2 days ago I became aware of a scammer presenting a school's main > >> number on outbound calls, being part of the team supporting the schools > >> phone system I can guarantee the system wasn't hacked at all. > >> There was no traffic from the school's phone system to Telstra during the > >> time of the scam calls, however plenty of angry people were calling back > >> yelling at the admin staff. > >> > >> so basically yes, a VoIP seller (yet not an official telco) putting zero > >> security on the calling number. > >> > >> Cheers, > >> Tim > >> > >> From: AusNOG <[email protected] > >> <mailto:[email protected]>> on behalf of Darren Moss > >> <[email protected] <mailto:[email protected]>> > >> Sent: Thursday, 18 February 2021 3:45 PM > >> To: Bradley Amm <[email protected] <mailto:[email protected]>>; AusNOG > >> Mailing List <[email protected] <mailto:[email protected]>> > >> Subject: Re: [AusNOG] "Telstra" scammers > >> > >> How are they making calls into AU mobile networks ? > >> > >> Surely they need a SIP service as a starting point. > >> > >> Is it a VoIP seller not performing checks ?? > >> > >> > >> Darren. > >> > >> > >> From: AusNOG [mailto:[email protected] > >> <mailto:[email protected]>] On Behalf Of Bradley Amm > >> Sent: Thursday, 18 February 2021 3:42 PM > >> To: [email protected] <mailto:[email protected]> > >> Subject: Re: [AusNOG] "Telstra" scammers > >> > >> Unfortunately not a lot can be done > >> I had a similar call today. Just blocked the numbers. > >> Probably a spoofed number as well > >> > >> > >> From: AusNOG <[email protected] > >> <mailto:[email protected]>> On Behalf Of Kai > >> Sent: Thursday, 18 February 2021 12:34 PM > >> To: [email protected] <mailto:[email protected]> > >> Subject: [AusNOG] "Telstra" scammers > >> > >> Just had a scam call from a female operator, called from "0432 594 523" > >> (probably a spoofed number), says her name is Selina from Telstra, that my > >> modem has a virus. She gave her Telstra staff ID as C0527 (that's not a > >> real Telstra staff ID, it starts with a 0 and it's too short) and hung up > >> when I asked what her Team Leader or Manager's name and staff ID is. > >> > >> So the "Telstra scammers" are still out there, trying to scam people. > >> Parasites. > >> > >> Sent from my smartphone. > >> _______________________________________________ > >> AusNOG mailing list > >> [email protected] <mailto:[email protected]> > >> http://lists.ausnog.net/mailman/listinfo/ausnog > >> <http://lists.ausnog.net/mailman/listinfo/ausnog> > > > _______________________________________________ > AusNOG mailing list > [email protected] <mailto:[email protected]> > http://lists.ausnog.net/mailman/listinfo/ausnog > <http://lists.ausnog.net/mailman/listinfo/ausnog> > -- > Damien Gardner Jnr > VK2TDG. Dip EE. GradIEAust > [email protected] <mailto:[email protected]> - http://www.rendrag.net/ > <http://www.rendrag.net/> > -- > We rode on the winds of the rising storm, > We ran to the sounds of thunder. > We danced among the lightning bolts, > and tore the world asunder > > _______________________________________________ > AusNOG mailing list > [email protected] > http://lists.ausnog.net/mailman/listinfo/ausnog
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