AT&T has experienced a significant data breach through the cloud computing platform Snowflake, affecting nearly all of its customers. The breach, which occurred between April 14 and 25, exposed call logs, phone numbers, and location data. This information could potentially be used to impersonate loved ones or steal banking information. The breach has led to multiple class-action lawsuits accusing AT&T of negligence and unjust enrichment. Critics, including Chirp CEO Tim Kravchunovsky, have highlighted the fragility of traditional web systems and the slow pace of breach reporting. The incident has prompted calls for stronger federal privacy laws in the US.