https://techcrunch.com/2019/12/01/millions-sms-messages-exposed/

A massive database storing tens of millions of SMS text messages, most of which were sent by businesses to potential customers, has been found online.

The database is run by TrueDialog, a business SMS provider for businesses and higher education providers, which lets companies, colleges, and universities send bulk text messages to their customers and students. The Austin, Texas-based company says one of the advantages to its service is that recipients can also text back, allowing them to have two-way conversations with brands or businesses.