Recent weeks have seen a sizable uptick in the number of phishing scams targeting U.S. Postal Service (USPS) customers. Here’s a look at an extensive SMS phishing operation that tries to steal personal and financial data by spoofing the USPS, as well as postal services in at least a dozen other countries.

I like to show my work, and went pretty far down the rabbit hole with this one:

https://krebsonsecurity.com/2023/10/phishers-spoof-usps-12-other-natl-postal-services/