Bleeping Computer

JANUARY 4, 2022

UScellular, self-described as the fourth-largest wireless carrier in the US, has disclosed a data breach after the company's billing system was hacked in December 2021. [.].

Data breaches 130

Data breaches Hacking Wireless 130

Heimadal Security

AUGUST 24, 2021

After its systems had been encrypted and its data stolen in a cyberattack carried out by the Conti ransomware group, the Nokia subsidiary SAC Wireless is now revealing it had suffered a data breach.

Wireless 98

Wireless Data breaches Ransomware Encryption 98

Security Affairs

JULY 12, 2024

AT&T disclosed a new data breach that exposed phone call and text message records for approximately 110 million people. AT&T suffered a massive data breach, attackers stole the call logs for approximately 110 million customers, which are almost all of the company’s mobile customers.

Data breaches 133

Data breaches Wireless Mobile Hacking 133

Security Affairs

DECEMBER 23, 2023

Mobile virtual network operator Mint Mobile suffered a new data breach, threat actors had access to customers’ personal information. Mint Mobile experienced a recent data breach, exposing customers’ personal information to unauthorized access by threat actors.

Data breaches 137

Data breaches Mobile Wireless Data collection 137

Hot for Security

JANUARY 29, 2021

USCellular, a Chicago-based mobile network operator, has revealed a data breach incident affecting an undisclosed number of customers. Two days later, the breach was discovered, prompting the company to reset employee passwords and remove the compromised systems from its computer network.

Data breaches 133

Data breaches Wireless Retail Malware 133

Security Affairs

MARCH 6, 2020

Virgin Media discloses a data breach that exposed the personal information of roughly 900,000 of its customers. Virgin Media discloses a data breach that exposed the personal information of approximately 900,000 customers (names, home, and email addresses and phone numbers ). ” continues the CEO’s notice.

Data breaches 138

Data breaches Media Wireless Advertising 138

Adam Levin

AUGUST 27, 2018

Wireless company T-Mobile suffered a data breach affecting more than 2 million of its 77 million customers. The breach resulted in the compromise of names, phone numbers, email addresses, as well as general account information, but not, according to the company, financial information. Read more about the breach here.

Data breaches 123

Data breaches Mobile Wireless Passwords 123

Security Affairs

DECEMBER 30, 2020

T-Mobile has disclosed a data breach that exposed customers’ network information (CPNI), including phone numbers and calls records. T-Mobile has disclosed a data breach exposing customers’ account’s information. ” reads the statement published by the company. Pierluigi Paganini.

Data breaches 145

Data breaches Mobile Telecommunications Accountability 145

Krebs on Security

FEBRUARY 14, 2024

Internet is a regional ISP that provides fiber and wireless Internet service. Internet and its subsidiary USI Wireless. Wireless employees were published in clear text on the Internet. Headquartered in Minnetonka, Minn., ” U.S. Since that index also included the messages of U.S. Individual inboxes of U.S.

Internet 363

Internet Internet Wireless Government 363

Security Affairs

NOVEMBER 18, 2024

In 2023, the carrier disclosed two data breaches , one in January and another in May. The security breach impacted a limited number of customers, only 836 individuals. The security breach impacted a limited number of customers, only 836 individuals. In February 2021, hundreds of users were hit with SIM swapping attacks.

Mobile 114

Mobile Telecommunications Data breaches Hacking 114

Bleeping Computer

AUGUST 23, 2021

SAC Wireless, a US-based and independently-operating Nokia company subsidiary, has disclosed a data breach following a ransomware attack where Conti operators were able to successfully breach its network, steal data, and encrypt systems. [.].

Data breaches 113

Data breaches Ransomware Wireless Encryption 113

Security Affairs

AUGUST 16, 2021

T-Mobile confirms a breach after threat actors claimed to have obtained records of 100 million of its customers and offered them for sale. T-Mobile has confirmed a data breach that exposed personal information from over 100 million of its US customers. SecurityAffairs – hacking, data breach). Pierluigi Paganini.

Data breaches 133

Data breaches Mobile Telecommunications Wireless 133

Malwarebytes

JULY 24, 2024

TracFone Wireless Inc. is an American prepay wireless service provider wholly owned by Verizon. TracFone services are used by the brands Straight Talk, Total by Verizon Wireless, and Walmart Family Mobile. Every breach is different, so check with the vendor to find out what’s happened and follow any specific advice they offer.

Data breaches 108

Data breaches Wireless Passwords Phishing 108

Bleeping Computer

JULY 23, 2024

concerning three data breach incidents its wholly-owned subsidiary, TracFone Wireless, suffered after its acquisition in 2021. [.] Verizon Communications has agreed to a $16,000,000 settlement with the Federal Communications Commission (FCC) in the U.S.

Data breaches 99

Data breaches Wireless 99

Krebs on Security

MARCH 20, 2023

AT&T’s disclosure said the information exposed included customer first name, wireless account number, wireless phone number and email address. That’s less clear, as the CPNI rules were established before mobile phones and wireless Internet access were common. ” Also maybe, “What can I do about it?”

Mobile 316

Mobile Wireless Advertising Accountability 316

SecureWorld News

JULY 12, 2024

The compromised data included files containing AT&T records of calls and texts from cellular customers, wireless network customers, and landline customers between May 2022 and October 2022, and records from January 2, 2023, for a small number of customers.

Data breaches 120

Data breaches Authentication Passwords Artificial Intelligence 120

Security Affairs

MAY 20, 2025

South Korean mobile network operator SK Telecom revealed that the security breach disclosed in April began in 2022. SK Telecom is South Koreas largest wireless telecom company, a major player in the countrys mobile and tech landscape.

Malware 107

Malware Mobile Data breaches Wireless 107

Security Affairs

AUGUST 18, 2021

Yesterday T-Mobile confirmed a data breach but announced that it was still investigating the extent of the security breach. The company announced to have started a “deep technical review of the situation across our systems to identify the nature of any data that was illegally accessed.” Pierluigi Paganini.

Data breaches 102

Data breaches Mobile Telecommunications Accountability 102

Security Affairs

MAY 1, 2023

T-Mobile disclosed the second data breach of 2023, threat actors had access to the personal information of hundreds of customers since February. T-Mobile suffered the second data breach of 2023, threat actors had access to the personal information of hundreds of customers starting in late February 2023.

Data breaches 98

Data breaches Mobile Identity Theft Accountability 98

Threatpost

JANUARY 4, 2021

The cyberattack incident is the wireless carrier's fourth in three years.

Data breaches 96

Data breaches Wireless Mobile Accountability 96

SecureWorld News

AUGUST 16, 2021

T-Mobile is investigating a post made on an underground forum that claims 100 million user accounts have been compromised in a data breach. The hacker, who spoke with VICE's Motherboard in an online chat, said the data came from T-Mobile USA and involves "full customer info.". It is unknown if the data was actually sold.

Data breaches 98

Data breaches Mobile Accountability Wireless 98

Security Affairs

MARCH 10, 2023

CPNI is information related to the telecommunications services purchased by the customers, including the number of lines for each account or the wireless plan to which customers are subscribed. ” reads a data breach communication sent by the company to the impacted customers. credit card data) or sensitive data (i.e.

Data breaches 98

Data breaches Hacking Wireless Telecommunications 98

Graham Cluley

JANUARY 20, 2023

Wireless network operator T-Mobile has suffered yet another data breach. And we shouldn't be at all surprised if fraudsters use the information that they have stolen to send convincing phishing messages and scams.

Mobile 135

Mobile Wireless Data breaches Scams 135

Security Affairs

JANUARY 20, 2023

Bad news for T-Mobile, the company disclosed a new data breach that resulted in the theft of data belonging to 37 customer accounts. T-Mobile suffered a new data breach, threat actor stole the personal information of 37 million current postpaid and prepaid customer accounts.

Data breaches 98

Data breaches Mobile Accountability Telecommunications 98

Security Affairs

MARCH 5, 2020

New problems for the wireless carrier T-Mobile that disclosed a data breach that exposed some of the customers’ personal information. The wireless carrier T-Mobile was victims of a sophisticated cyber attack that targeted its email vendor. ” reads the data breach notification. .

Mobile 145

Mobile Data breaches Telecommunications Wireless 145

Krebs on Security

JULY 29, 2021

Every time there is another data breach, we are asked to change our password at the breached entity. Here’s a closer look at what typically transpires in the weeks or months before an organization notifies its users about a breached database.

Passwords 363

Passwords Password Management Phishing Scams 363

Security Affairs

MAY 8, 2023

Western Digital is notifying its customers of a data breach that exposed their sensitive personal information, the incident took place in March. The company is sending customers data breach notification letters to confirm that threat actors have stolen sensitive personal information in the March attack.

Data breaches 98

Data breaches Backups Ransomware Network Security 98

eSecurity Planet

AUGUST 17, 2021

“In light of this, I would urge any customers who have been affected by this breach to be wary of any unexpected communications they might now receive, whether that’s over email, text messages or phone calls. Data breaches continue to be a scourge of enterprises. million – was down 20 percent. million – was down 20 percent.

Data breaches 109

Data breaches Mobile Artificial Intelligence Identity Theft 109

Responsible Cyber

NOVEMBER 17, 2024

Image Source: AI Generated Recent data breaches have exposed sensitive information from millions of customers across healthcare, financial services, and technology sectors. These data breaches highlight significant vulnerabilities in vendor relationships and supply chain security. million per incident in 2023.

Data breaches 98

Data breaches Healthcare Social Engineering Financial Services 98

Dark Reading

JANUARY 4, 2021

The wireless carrier has suffered a data breach for the fourth time since 2018.

Mobile 110

Mobile Wireless Hacking Data breaches 110

Krebs on Security

AUGUST 3, 2020

Some wireless providers now offer additional services and features to help block automated calls. For example, AT&T offers wireless customers its free Call Protect app , which screens incoming calls and flags those that are likely spam calls. If and when you do receive robocalls, consider reporting them to the FTC.

Mobile 361

Mobile Marketing Consumer Protection Wireless 361

Krebs on Security

NOVEMBER 11, 2019

-Data backup services. Netflow data. Orvis wireless networks (public and private). Employee wireless phone services. “Pastebin and other similar repositories are constantly being monitored and any data put out there will be preserved no matter how brief the posting is,” Holden said. Linux servers.

Retail 242

Retail Passwords Wireless Backups 242

Security Affairs

JULY 15, 2024

Wired attributes the recently disclosed AT&T data breach to a hacker living in Turkey and reported the company paid a $370,000 ransom. An American hacker who lives in Turkey claimed responsibility for the recently disclosed AT&T data breach. Then the ransom was received by a ShinyHunters member.

Data breaches 136

Data breaches Wireless Hacking Mobile 136

Krebs on Security

AUGUST 25, 2023

And there are indications that fraudsters may already be exploiting the stolen data in phishing attacks. ” Apparently, these elite cyber risk leaders did not consider the increased attack surface presented by their employees using T-Mobile for wireless service. ” T-Mobile has not yet responded to requests for comment. .”

Mobile 244

Mobile Cyber Risk Data breaches Cryptocurrency 244

Security Affairs

APRIL 22, 2025

SK Telecom is South Koreas largest wireless telecom company, a major player in the countrys mobile and tech landscape. ” reads the data breach notification published by the company. Follow me on Twitter: @securityaffairs and Facebook and Mastodon Pierluigi Paganini ( SecurityAffairs hacking,data breach)

Data breaches 90

Data breaches Risk Mobile Wireless 90

Security Affairs

FEBRUARY 27, 2021

The telecommunications giant T-Mobile disclosed a data breach after some of its customers were apparently affected by SIM swap attacks. The telecommunications provider T-Mobile has disclosed a data breach after it became aware that some of its customers were allegedly victims of SIM swap attacks. Pierluigi Paganini.

Mobile 135

Mobile Data breaches Telecommunications Accountability 135

Krebs on Security

APRIL 12, 2022

Department of Justice (DOJ) said today it seized the website and user database for RaidForums , an extremely popular English-language cybercrime forum that sold access to more than 10 billion consumer records stolen in some of the world’s largest data breaches since 2015.

Government 263

Government Identity Theft Mobile Data breaches 263