Just because a call is a spam call doesn't mean it is spoofed. STIR/SHAKEN ends spoofing but anyone can ultimately buy a phone and make calls that are spammy.

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ChrisMarshallNY 3 hours ago | parent | next [-]

Spoofing isn’t ended at all

Almost every spam call has that I get, is spoofed.

Someone here explained it, once.

I think the spoofed calls use a legacy transport tech that can’t be forced to validate.

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hobofan 3 hours ago | parent | next [-]

Can't that legacy transport be blocked / not-be-peered with then? That's what usually happens with old insecure tech that is being phased out.

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singpolyma3 3 hours ago | parent | prev [-]

How do you verify it is spoofed? Have you asked your carrier to drop unverified calls from your service?

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ChrisMarshallNY 2 hours ago | parent [-]

> How do you verify it is spoofed?

Not my job to "verify," in the technical sense.

When a call for an Indian crypto pump comes in as "SMITH, ROBERT", and a local exchange, I call that "spoofed."

	▲	sgarman an hour ago \| parent [-]
		Mine literally come from the verified coinbase phone number and say coinbase and everything. If I didn't know for sure they are not calling me I'd think it was real 100%.

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Zak 3 hours ago | parent | prev | next [-]

Sure, but with phone numbers that can't be spoofed, telcos can terminate service, and filtering technologies can block calls. Spam gets expensive if you have to buy new service every five calls.

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singpolyma3 3 hours ago | parent [-]

It does. But the spammers still do it. Because eventually they hit one person who gives them a thousand dollars or whatever and it pays off.

	▲	Zak 2 hours ago \| parent [-]
		Preventing spoofing doesn't have to make spam cost-prohibitive for every spammer to greatly reduce the volume, and it does not interfere with ordinary people obtaining phone service anonymously.

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iamnothere 3 hours ago | parent | prev [-]

Nobody is making spam calls with cell phones. Spammers use VOIP services and old TDM systems.

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DrewADesign 3 hours ago | parent [-]

There’s SIM card banks for SMS spam… I’d be surprised if there wasn’t anything similar for calling. Not that I support this bill but it is a thing.

	▲	rescbr 2 hours ago \| parent [-]
		From what I’ve investigated as a recipient of spam calls, I’ve been called from legitimate mobile numbers from my own mobile telco. The only thing that explains that are SIM card banks. Unfortunately there isn’t an easy way to report abuse to the telcos (and regulators).