The Syniverse hack may be the most important data breach of the year!
Hackers had access for 5 years and potentially compromised hundreds of billions of SMS text messages, likely including 2nd Factor Authentication codes that protect logins and are used to reset passwords.
The supply-chain/3rd party style breach likely exposed billions of mobile text messages and 2FA security codes, giving attackers the ability to gain selective access to very sensitive systems and data. This breach impacted customers from all the major mobile carriers.
SEC filing where Syniverse discloses the breach: https://www.sec.gov/Archives/edgar/data/1839175/000119312521284329/d234831dprem14a.htm
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