Why you get so many spam calls

Spam calling did not always look like this. Two things changed to make it this cheap and this common: calling itself got nearly free, and caller ID was never actually verified.

Because calling is now almost free

A spam operation running over VoIP can place thousands of simultaneous calls for a tiny fraction of what a traditional phone line would have cost. The same shift that made international calling cheap for everyone made mass unsolicited calling cheap too.

Because the caller ID shown to you was never verified

As covered on the call spoofing page, the number that appears on your screen has historically been whatever the caller typed in, not something the network confirmed. That gap is exactly what lets a spam call impersonate a bank, a government agency, or a number in your own area code.

What is actually being done about it

STIR/SHAKEN attacks the spoofing side directly, letting carriers sign calls so a faked number can be flagged. Carrier-level filtering and apps like Whoscall attack it from a different angle entirely, using reputation and community reports to guess which numbers are likely spam, without needing to prove anything cryptographically.

Neither approach alone solves the problem completely. Verification proves a number is real, not that the caller is honest, and reputation filtering can only catch patterns it has already seen.

Why some regions see more of it than others

Regions without a STIR/SHAKEN-equivalent mandate, or with weaker enforcement against VoIP abuse, are structurally easier to spam from. This is part of why Malaysia and similar markets see a heavy volume of scam calls: the technical guardrails that exist in the US and Canada simply are not universal yet.