AT&T and Snowflake shares fall after hacker attack By Investing.com

Shares of AT&T (NYSE:) and Snowflake (NYSE:) plunged today after the telecommunications giant disclosed a significant cybersecurity breach. In a press release issued Friday, AT&T disclosed that hackers accessed and copied customer call logs from a third-party cloud platform between April 14 and April 25, 2024.

AT&T shares are down about 3% in premarket trading, while SNOW is currently down more than 4%.

AT&T reportedly confirmed that the latest attack on Snowflake came as part of a recent data theft targeting the company’s customers.

In its press release, AT&T said the compromised data, which covers the period from May 1 to October 31, 2022 and January 2, 2023, includes call and SMS records from nearly all of AT&T’s wireless customers and mobile virtual network operators (MVNOs).

Although the data theft did not reveal any personal information such as social security numbers or dates of birth, it did reveal data about calls and text messages, including phone numbers, number of calls and duration.

“The records identify the phone numbers with which an AT&T or MVNO mobile number interacted during those time periods. For a subset of the records, one or more cell site identification numbers associated with the interactions are also included,” the company said.

AT&T assured its customers that the content of calls and text messages would remain confidential, but experts warn that the leaked data could be exploited by fraudsters and identity thieves.

The company has implemented additional security measures and is working with law enforcement to apprehend those responsible. The announcement of the breach has raised concerns about the security of cloud-based platforms and data privacy.

“As always, our top priority is our customers. We will notify current and former customers whose data is affected and provide them with resources to protect their data,” AT&T added.

The share price of Snowflake, a provider of cloud data platforms, has fallen, as has AT&T, reflecting investor concerns about the potential fallout from the incident.