According to Jinshi, technology blog TechCrunch disclosed that a large amount of cached data containing AT&T customer records was leaked online. AT&T has reset the account passwords of millions of customers, and security researchers say the encrypted account passwords are easy to decipher. AT&T's preliminary analysis said the data set may be from 2019 or earlier, affecting about 7.6 million current account holders and about 65.4 million former account holders. There is no evidence that the data breach was caused by unauthorized access to its systems. It's unclear whether the data comes from AT&T or its suppliers.