Security Affairs

MARCH 30, 2024

AT&T confirmed that a data breach impacted 73 million current and former customers after its data were leaked on a cybercrime forum. In March 2024, more than 70,000,000 records from an unspecified division of AT&T were leaked onto Breached forum, vx-underground researchers reported. million former account holders.”

Data breaches 145

Data breaches Telecommunications Cybercrime Hacking 145

Malwarebytes

APRIL 16, 2025

Good bots accounted for just 14% of the internet’s traffic. An increasing number try to hijack peoples’ online accounts, which they often do by credential stuffing. These account takeover attacks have skyrocketed lately. Bad bots comprised 37% of internet traffic in 2024, up from 32% the year prior.

Internet 144

Internet Internet Passwords Artificial Intelligence 144

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 16, 2020

Hackers have stolen O2 customers’ data from a database run by Aerial Direct , one of the largest UK partners of the telecommunications services provider. To reassure you, the database did not include any passwords or financial details, such as bank account number or credit card information.” Pierluigi Paganini.

Data breaches 138

Data breaches Telecommunications Passwords Advertising 138

Krebs on Security

APRIL 10, 2025

Thus, the missives bypass the mobile phone networks entirely and enjoy near 100 percent delivery rate (at least until Apple and Google suspend the spammy accounts). Rather, they are sent via iMessage to Apple device users, and via RCS on Google Android devices. Image: Prodaft.

Phishing 246

Phishing Banking Mobile Retail 246

Heimadal Security

JANUARY 20, 2023

T-Mobile announced a new data breach after a threat actor used one of its Application Programming Interfaces to steal personal data from 37 million active postpaid and prepaid customer accounts (APIs).

Data breaches 105

Data breaches Mobile Telecommunications Accountability 105

Security Affairs

APRIL 10, 2024

AT&T confirmed that the data breach impacted 51 million former and current customers and is notifying them. AT&T revealed that the recently disclosed data breach impacts more than 51 million former and current customers and is notifying them. ” reads the data breach notification.

Data breaches 130

Data breaches Telecommunications Identity Theft Hacking 130

Security Affairs

JANUARY 20, 2020

. “On June 28, last year, a suspicious behavior was detected and investigated on a terminal in our company, and as a result of unauthorized access by a third party, data was transmitted to the outside,” reads a data breach notification published by the company. SecurityAffairs – data breach, hacking).

Data breaches 145

Data breaches Media Computers and Electronics Cyber Attacks 145

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 103

Data breaches Mobile Telecommunications Accountability 103

The Hacker News

OCTOBER 5, 2022

Australia's largest telecommunications company Telstra disclosed that it was the victim of a data breach through a third-party, nearly two weeks after Optus reported a breach of its own. And no customer account data was involved."

Data breaches 102

Data breaches Telecommunications Information Security Accountability 102

Malwarebytes

APRIL 2, 2024

Telecommunications giant AT&T has finally confirmed that 73 million current and former customers have been caught up in a massive dark web data leak. The leaked data includes names, addresses, mobile phone numbers, dates of birth, and social security numbers. million current AT&T account holders and approximately 65.4

Data breaches 145

Data breaches Passwords Phishing Accountability 145

Security Affairs

OCTOBER 5, 2022

Bad news for the Australian telecommunications industry, the largest company in the country Telstra suffered a data breach. Australia’s largest telecommunications company Telstra disclosed a data breach through a third-party supplier. It seems that the security breach also impacted other companies.

Data breaches 98

Data breaches Telecommunications Accountability Information Security 98

Troy Hunt

MAY 8, 2025

So, that's passwords sorted, but the impact of data breaches goes well beyond passwords alone. There are many different ways people are impacted by breaches, for example, identity fraud. what if it wasn't me, and my personal information had been used by someone else to open the account?

Data breaches 190

Data breaches Banking Passwords Accountability 190

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.

Mobile 137

Mobile Data breaches Telecommunications Accountability 137

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. A data breach notification published by the telecommunications giant on its website revealed that the security breach impacted both employees and customers.

Mobile 145

Mobile Data breaches Telecommunications Wireless 145

Heimadal Security

MARCH 1, 2021

After an undisclosed number of subscribers were reportedly hit by malicious SIM swapping attacks, American telecommunications company T-Mobile has announced a data breach. The post T-Mobile Confirms Data Breach and SIM Swapping Attacks appeared first on Heimdal Security Blog.

Data breaches 89

Data breaches Mobile Telecommunications Accountability 89

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

Krebs on Security

DECEMBER 14, 2020

From there, the attackers would be able to forge single sign-on tokens that impersonate any of the organization’s existing users and accounts, including highly privileged accounts on the network. all ten of the top ten US telecommunications companies. accounting firms. Fortune 500. all five branches of the U.S.

Hacking 364

Hacking Antivirus Accountability Software 364

Security Affairs

JULY 16, 2019

US telecommunications company Sprint revealed that hackers compromised an unknown number of customer accounts via the Samsung.com “add a line” website. “On June 22, Sprint was informed of unauthorized access to your Sprint account using your account credentials via the Samsung.com “add a line” website.”

Accountability 107

Accountability Identity Theft Telecommunications Data breaches 107

Security Affairs

MARCH 27, 2025

Arkana Security, a new ransomware group, claims to have breached the telecommunications provider WideOpenWest (WOW!). stealing customer data. is a US-based telecommunications company that provides broadband internet, cable TV, and phone services. million accounts. has not yet confirmed the alleged data breach.

Hacking 81

Hacking Telecommunications Data breaches Internet 81

Krebs on Security

AUGUST 12, 2020

Several stories here have highlighted the importance of creating accounts online tied to your various identity, financial and communications services before identity thieves do it for you. ” In short, although you may not be required to create online accounts to manage your affairs at your ISP, the U.S. .”

Accountability 357

Accountability Mobile Banking Passwords 357

Security Affairs

JUNE 9, 2024

Last week, the RansomHub ransomware group claimed to have stolen the information of over 2 million customers from the American telecommunications company Frontier Communications. The RansomHub group claimed to have stolen 5GB of data from the telecommunications giant. concludes the letter reads.

Data breaches 104

Data breaches Identity Theft Telecommunications Cybercrime 104

Security Affairs

JULY 10, 2021

Mint Mobile discloses a data breach, an unauthorized attacker gained access to subscribers’ account information and ported phone numbers. Mint Mobile is an American telecommunications company which sells mobile phone services and operates as an MVNO on T-Mobile’s cellular network in the United States.

Mobile 144

Mobile Data breaches Telecommunications Passwords 144

Krebs on Security

JANUARY 29, 2020

A review of the exposed support forum by this author suggests that while none of the posts exposed customer information such as payment card data, a number of them did include customer account information, such customer names, device identifiers and in some cases location information.

Social Engineering 326

Social Engineering Telecommunications Data privacy Engineering 326

Krebs on Security

MARCH 20, 2023

Image: Shutterstock Telecommunications giant AT&T disclosed this month that a breach at a marketing vendor exposed certain account information for nine million customers. AT&T’s disclosure said the information exposed included customer first name, wireless account number, wireless phone number and email address.

Mobile 316

Mobile Wireless Advertising Accountability 316

Krebs on Security

FEBRUARY 19, 2020

Networking software giant Citrix Systems says malicious hackers were inside its networks for five months between 2018 and 2019, making off with personal and financial data on company employees, contractors, interns, job candidates and their dependents.

VPN 363

VPN Passwords Software Telecommunications 363

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. ” continues the notice. .

Data breaches 98

Data breaches Hacking Wireless Telecommunications 98

Krebs on Security

NOVEMBER 3, 2022

A Twitter account by that name was verified by Kivimaki’s attorney as his, and through that account he denied being involved in the Vastaamo extortion. “According to Vastaamo, the data breach in Vastaamo’s customer databases took place in November 2018,” Iltalehti reported last month. ” .

Data breaches 259

Data breaches Cybercrime Accountability Telecommunications 259

SecureWorld News

OCTOBER 7, 2021

A recent hack discovered by one of the world's largest telecommunications companies has the potential to impact millions of cell phone users worldwide. Syniverse systems have direct access to phone call records and text messaging, and indirect access to a large range of Internet accounts protected with SMS 2-factor authentication.

Data breaches 98

Data breaches Hacking Mobile Authentication 98

Security Boulevard

MARCH 24, 2025

While MFA is primarily a security feature, its primary privacy benefit is adding another layer of security to prevent unauthorized access to information contained in particular important or sensitive accounts. Specifically, it was fetching account icons and defaulted to opening password reset pages over HTTP.

Surveillance 75

Surveillance Telecommunications Data breaches Malware 75

Heimadal Security

JULY 12, 2021

It seems that the Mint Mobile data breach happened when an unauthorized person obtained access to subscribers’ account information and in this way succeeded to port phone numbers to another carrier. The post Mint Mobile Was Hit by a Data Breach appeared first on Heimdal Security Blog. The […].

Data breaches 66

Data breaches Mobile Telecommunications Accountability 66

Krebs on Security

APRIL 11, 2024

New York City based Sisense has more than 1,000 customers across a range of industry verticals, including financial services, telecommunications, healthcare and higher education. ” “We are taking this matter seriously and promptly commenced an investigation,” Dash continued.

CISO 326

CISO Encryption Telecommunications Financial Services 326

Security Affairs

MARCH 23, 2022

Microsoft has now confirmed that the attackers have compromised the account of one of its employees gaining limited access to source code repositories. The company pointed out that customer code or data was not compromised as a result of unauthorized access. No customer code or data was involved in the observed activities.

Accountability 105

Accountability VPN Hacking Social Engineering 105

SecureWorld News

FEBRUARY 19, 2025

Chinese cyber espionage group Salt Typhoon has made headlines in the last year, breaching major U.S. telecommunications providers , including AT&T, Verizon, and Lumen Technologies. sanctions, Insikt Group expects Salt Typhoon to continue targeting telecommunications providers in the U.S. As tensions escalate between the U.S.

Telecommunications 65

Telecommunications Internet Internet Technology 65

Krebs on Security

DECEMBER 29, 2022

Internal Revenue Service website for months: Anyone seeking to create an account to view their tax records online would soon be required to provide biometric data to a private company in Virginia — ID.me. banks are stiffing account takeover victims. A single bitcoin is trading at around $45,000. Elizabeth Warren (D-Mass.)

Cryptocurrency 309

Cryptocurrency Cybercrime Computers and Electronics Scams 309

SecureList

DECEMBER 12, 2023

Every year is abundant with major data leaks, biggest data breaches and hacks drawing massive media attention (such as Medibank and Optus data breach, Twitter data breach, and Uber and Rockstar compromise in 2022 and in T-Mobile , MailChimp and OpenAI in 2023).

Data breaches 130

Data breaches Accountability Telecommunications Malware 130

Security Affairs

JULY 31, 2018

Dixons Carphone announced on Monday that the security breach discovered in June affected around 10 million customers, much more than the initial estimate. The situation was worse than initially thought, the company announced on Monday that the security breach affected around 10 million customers, much more than the initial estimate.

Data breaches 66

Data breaches Telecommunications Advertising Retail 66