Syniverse, the well-known telecom giant, revealed to the Securities and Exchange Commission that hackers infiltrated its systems for more than five years. As a result, millions of cellphone users’ data and billions of text messages were exposed.
For your information, Syniverse works with carriers like T-Mobile, Verizon, and AT&T in routing messages exchanged between them and carriers abroad. According to the company’s website, it processes more than 740 billion messages per year.
The same company made headlines for the disappearance of Valentine’s Day text messages back in 2019.