afo's comments

afo | 7 years ago | on: Voice Phishing Scams Are Getting More Clever

A better analogy that I use (especially with nontechnical folks) is the return address on an envelope.

You can, technically, write anything in it and there’s no way to guarantee it’s authentic.

afo | 7 years ago | on: Bay Area man must pay $136,000 in tech-support scam against elderly

Happy to talk about the landline product. Just for clarification, the mobile product works completely differently.

1. Yes, pretty much. Here's a more in-depth answer to what happens when the call is answered - http://www.6083716666.com/

2. Yes, we do get a log of the incoming calls. We use that to analyze the high frequency calling patterns across millions of phone lines and build the blacklist. The more people that contribute, the better the algorithm gets.

3. We globally manage the whitelist and good robocalls (school closings, pharmacies, doctors offices, etc)

4. We don't work with POTS lines yet. The older technologies are tougher to protect than the modern ones.

afo | 7 years ago | on: Bay Area man must pay $136,000 in tech-support scam against elderly

Even with all these high profile settlements, it's still not stopping the problem.

Just today, we (Nomorobo) see 25 different numbers pushing Windows tech support scams. It's like that every. single. day.

This is an emergency call from Windows Microsoft. Your Windows license key have been expired all services are suspended on your computer. To renew call our toll free 1-877-231-6134.

https://www.nomorobo.com/lookup/844-805-7111

https://www.nomorobo.com/lookup/855-328-4888

https://www.nomorobo.com/lookup/844-517-8655

https://www.nomorobo.com/lookup/844-904-1444

https://www.nomorobo.com/lookup/972-441-0548

...

https://www.nomorobo.com/lookup/855-895-6786

(edit: formatting)

afo | 7 years ago | on: FCC fines robocaller record $120M

I found that strange, too. Apple made it seem like it was China only but it's not.

Those features of CallKit are what we (Nomorobo) use to stop the robocalls.

afo | 7 years ago | on: FCC fines robocaller record $120M

Completely agree. For the carriers, robocall blocking is not a technical problem, it's a legal/liability one.

This makes third party call blocking products a better/easier solution for carriers to recommend as a solution.

afo | 7 years ago | on: FCC fines robocaller record $120M

We updated the app based on that feedback.

We used to show "unblockable" because there was a problem with false positives. Lots of families had sequential numbers that were accidentally getting blocked.

Now, if you give us access to your contacts (local processing only, never transmitted to our servers) we can completely block them.

afo | 7 years ago | on: FCC fines robocaller record $120M

We (Nomorobo) protect you from both neighbor spoofing as well as "standard" robocalls. We add over 1,300+ new robocaller numbers every day. It's pretty crazy out there.

afo | 8 years ago | on: Ask HN: Chinese spam-calls, anyone know what's going on?

They are absolutely targeting cities with large Asian populations. It's not random.

This is the breakdown for incoming calls to the Nomorobo honeypot for 4/1/2018-4/23/18 that have called more than one line from 212-244-[0000-9999] (the last 4 digits change frequently, just like regular neighbor spoofing).

Data source: Our honeypot consists of over 300k lines from around the country that people have gotten rid of, mostly due to getting so many robocalls. It's the main weapon that we use to build our blacklist.

  to_npa	to_nxx	calls	lines	city, st
  646	233	1383	642	NEW YORK, NY
  347	218	935	783	BROOKLYN, NY
  415	965	266	266	BOLINAS, CA
  917	563	192	147	NEW YORK, NY
  718	878	176	152	FLUSHING, NY
  617	767	57	56	SOMERVILLE, MA
  562	200	56	56	LONG BEACH, CA
  626	427	50	40	LOS ANGELES, CA
  201	546	44	44	HACKENSACK, NJ
  323	203	19	19	LOS ANGELES, CA
  650	492	19	19	MOUNTAIN VIEW, CA
  832	293	15	13	HOUSTON, TX
  857	488	12	12	BOSTON, MA
  845	262	10	10	SPRING VALLEY, NY
  585	286	10	10	ROCHESTER, NY
  949	393	9	9	MISSION VIEJO, CA
  206	535	9	9	SEATTLE, WA
  267	457	8	8	PHILADELPHIA, PA
  716	989	7	7	BUFFALO, NY
  310	400	7	7	LOS ANGELES, CA
  510	250	7	7	OAKLAND, CA
  516	279	6	6	GARDEN CITY, NY
  929	200	6	5	FLUSHING, NY
  909	214	3	3	ONTARIO, CA
  315	982	3	3	UTICA, NY
  848	260	3	3	METUCHEN, NJ
  908	360	3	3	MILLINGTON, NJ
  301	825	2	2	ROCKVILLE, MD
  212	687	2	2	NEW YORK, NY
  202	813	2	2	WASHINGTON, DC
page 1