Caller ID Spoofing

This cluster focuses on the ease of spoofing caller ID in phone calls, its facilitation of scams and spam, and discussions on why it's still possible despite efforts like STIR/SHAKEN.

📉 Falling 0.3x Security
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#779
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Keywords

US ANI ICICI SMS GP VOIP IVRS www.fcc OP NA caller id spoof phone numbers calls phone number number spoofing bank

Sample Comments

nmjohn May 8, 2016 View on HN

Basically, because there is no verification/validation surrounding caller id - https://en.wikipedia.org/wiki/Caller_ID_spoofing

joshu Jan 28, 2015 View on HN

Why is it still possible to spoof caller id?

idunno246 Mar 15, 2013 View on HN

Except caller id / phone number is easily spoofed

gruez Oct 29, 2015 View on HN

but you can't rely on the phone number reported by caller id - they're very spoofable.

jowea Dec 7, 2024 View on HN

I'm guessing but the problem is source phone number spoofing. If Caller ID worked correctly 100% of the time and 100% of the time you get a fraud/spam/etc call you could complain and the authorities knew who owned the phone number it would be harder to operate the fraud. And with personal cryptographic attestation you could reliably link a phone number to a person.

matsemann Sep 14, 2023 View on HN

They could trivially spoof the number they're calling from to match.

egberts1 Aug 23, 2021 View on HN

ummmm, caller ID are easily spoofed, no?

kmoser May 3, 2024 View on HN

This won't work since Caller ID is too easy to spoof.

phkahler Aug 16, 2017 View on HN

It should not be possible to spoof caller ID. This hole is what allows all of this. Nobody would do this if you could reliably report them or call them back.

kevin_b_er Oct 1, 2018 View on HN

This is no longer a valid tactic. The phone number can, has, and will be spoofed.