Krebs on Security

DECEMBER 14, 2020

all ten of the top ten US telecommunications companies. FireEye posits the impact of the hack on SolarWinds is widespread, affecting public and private organizations around the world. The Reuters story quotes several anonymous sources saying the intrusions at the Commerce and Treasury departments could be just the tip of the iceberg.

Hacking 364

Hacking Antivirus Accountability Software 364

Security Affairs

JUNE 4, 2024

The RansomHub ransomware group added the American telecommunications company Frontier Comunications to the list of victims on its Tor leak site. The RansomHub ransomware group claimed to have stolen the information of over 2 million customers from the American telecommunications company Frontier Communications.

Telecommunications 135

Telecommunications Hacking Data breaches Cybercrime 135

Security Affairs

APRIL 11, 2020

San Francisco International Airport (SFO) disclosed a data breach, its websites SFOConnect.com and SFOConstruction.com were hacked last month. In March hackers compromised two websites of San Francisco International Airport (SFO) and now it disclosed a data breach. ” continues the data breach notice.

Data breaches 145

Data breaches Hacking Telecommunications Advertising 145

Security Affairs

DECEMBER 4, 2024

British multinational telecommunications holding company BT Group (formerly British Telecom) announced it has shut down some of its servers following a Black Basta ransomware attack. The group claimed to have stolen 500GB of data including Finacial data, Organisation data, Users data and personal documents, NDA’s, Confidential data, and more.

Ransomware 126

Ransomware Telecommunications Healthcare Insurance 126

Security Affairs

MARCH 27, 2025

Arkana Security, a new ransomware group, claims to have breached the telecommunications provider WideOpenWest (WOW!). The new ransomware group Arkana Security claims to have hacked US telecom provider WOW!, stealing customer data. has not yet confirmed the alleged data breach. WideOpenWest (WOW!)

Hacking 78

Hacking Telecommunications Data breaches Internet 78

Security Affairs

OCTOBER 7, 2024

238,000 Comcast customers were impacted by the FBCS data breach following the February ransomware attack, Comcast reports. Telecommunications giant Comcast is notifying approximately 238,000 customers impacted by the Financial Business and Consumer Solutions (FBCS) data breach. reads the notice of data breach.

Data breaches 132

Data breaches Telecommunications Accountability Ransomware 132

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. The telecommunication giant is in the process of notifying impacted customers.

Data breaches 145

Data breaches Mobile Telecommunications Accountability 145

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.

Data breaches 145

Data breaches Telecommunications Cybercrime Hacking 145

Security Affairs

FEBRUARY 23, 2024

Australian telecommunications provider Tangerine disclosed a data breach that impacted roughly 230,000 individuals. Tangerine suffered a data breach that exposed the personal information of roughly 230,000 individuals.

Data breaches 133

Data breaches Telecommunications Banking Mobile 133

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).

Data breaches 133

Data breaches Mobile Telecommunications Wireless 133

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 128

Data breaches Telecommunications Identity Theft Hacking 128

Security Affairs

MAY 9, 2025

.” In April 2025, the South African multinational telecommunications company MTN Group Limited disclosed a data breach that exposed subscribers personal information, it added that the incident did not impact the core network, billing systems and financial services infrastructure.

Cyber Attacks 112

Cyber Attacks Data breaches Telecommunications Mobile 112

CyberSecurity Insiders

OCTOBER 9, 2022

Just within 3 weeks of confirmation, Singapore Telecommunication LTD aka SingTel has confirmed another data breach after Optus Cyber Attack. Now, the latest victim seems to be a subsidiary of Singtel named ‘Dialog’ and sensitive details were also accessed in the hack.

Data breaches 131

Data breaches Cyber Attacks Telecommunications Hacking 131

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

NOVEMBER 22, 2019

Bad news for T-Mobile prepaid customer, the US-based telecom giant T-Mobile today disclosed a new data breach incident. The US branch of the telecommunications giant T -Mobile disclosed a security breach that according to the company impacted a small number of customers of its prepaid service. Pierluigi Paganini.

Wireless 137

Wireless Data breaches Mobile Telecommunications 137

Security Affairs

NOVEMBER 17, 2024

that reboots locked devices Ymir ransomware, a new stealthy ransomware grow in the wild Amazon discloses employee data breach after May 2023 MOVEit attacks A new fileless variant of Remcos RAT observed in the wild A surge in Pro-Russia cyberattacks after decision to monitor North Korean Troops in Ukraine U.S.

Cryptocurrency 112

Cryptocurrency Hacking Malware Data breaches 112

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. ” reads the data breach notification published by the company. Copyright (C) 2014 Media.net Advertising FZ-LLC All Rights Reserved -->. Pierluigi Paganini.

Data breaches 138

Data breaches Telecommunications Passwords Advertising 138

Security Affairs

MARCH 10, 2023

AT&T is warning some of its customers that some of their information was exposed after the hack of a third-party vendor’s system. AT&T is notifying millions of customers that some of their information was exposed after a third-party vendor was hacked. ”​ Exposed data don’t include financial information (i.e.

Data breaches 98

Data breaches Hacking Wireless Telecommunications 98

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

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

Security Affairs

MARCH 5, 2021

SITA is a multinational information technology company providing IT and telecommunication services to the air transport industry. SecurityAffairs – hacking, data breach). The post Millions of travelers of several airlines impacted by SITA data breach appeared first on Security Affairs. Pierluigi Paganini.

Data breaches 119

Data breaches Telecommunications Technology Hacking 119

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 102

Data breaches Identity Theft Telecommunications Cybercrime 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

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

Security Affairs

FEBRUARY 21, 2020

The Defense Information Systems Agency (DISA) US agency in charge of secure IT and communication for the White House has disclosed a data breach. The agency sent a data breach notification to its employees last week informing them of a security breach that took place last year between May and July.

Data breaches 144

Data breaches Telecommunications Advertising Hacking 144

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 135

Mobile Data breaches Telecommunications Identity Theft 135

Krebs on Security

FEBRUARY 19, 2020

Resecurity also presented evidence that it notified Citrix of the breach as early as Dec. Iranian hackers recently have been blamed for hacking VPN servers around the world in a bid to plant backdoors in large corporate networks. 28, 2018, a claim Citrix initially denied but later acknowledged.

VPN 363

VPN Passwords Software Telecommunications 363

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

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. The company also says it discovered the breach in May 2021, but the hack began five years earlier in 2016. 2FA concerns from Syniverse hack.

Data breaches 98

Data breaches Hacking Mobile Authentication 98

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. Pierluigi Paganini.

Mobile 144

Mobile Data breaches Telecommunications Passwords 144

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. Not all of those undercover buys went as planned.

Government 263

Government Identity Theft Mobile Data breaches 263

Krebs on Security

NOVEMBER 3, 2022

In 2013, Kurittu worked on investigation involving Kivimaki’s use of the Zbot botnet, among other activities Kivimaki engaged in as a member of the hacker group Hack the Planet. “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

Tech Republic Security

JULY 12, 2024

Businesses and individuals with AT&T accounts from May 1, 2022 to October 31, 2022 and on January 2, 2023 will be notified if their data was affected.

Hacking 202

Hacking Accountability Big data Telecommunications 202

Adam Levin

JANUARY 6, 2021

cybersecurity, intelligence, and law enforcement agencies, announced earlier this week that Russia was “likely” responsible for the 2020 SolarWinds data breach. The Department of Justice has since announced that their email systems had also been breached. The Cyber Unified Coordination Group (UCG), a task force composed of U.S.

Government 130

Government Telecommunications Data breaches Hacking 130

Security Affairs

FEBRUARY 15, 2025

CISA adds Microsoft Windows, Zyxel device flaws to its Known Exploited Vulnerabilities catalog Microsoft Patch Tuesday security updates for February 2025 ficed 2 actively exploited bugs Hacking Attackers exploit a new zero-day to hijack Fortinet firewalls Security OpenSSL patched high-severity flaw CVE-2024-12797 Progress Software fixed multiple high-severity (..)

Spyware 70

Spyware Firewall Artificial Intelligence Malware 70

Security Affairs

AUGUST 15, 2021

T-Mobile is investigating a possible data breach after a threat actor published a post on a forum claiming to be selling the personal data of its customers. SecurityAffairs – hacking, data breach). We do not have any additional information to share at this time.” Pierluigi Paganini.

Mobile 112

Mobile Data breaches Telecommunications Hacking 112

Heimadal Security

SEPTEMBER 28, 2022

The Australian government says that it’s considering adopting tougher cybersecurity laws for companies in the telecommunication sector following the recent Optus data breach, where the data of 9.8 that the hack was “an unprecedented theft of consumer information in Australian […].

Cybersecurity 105

Cybersecurity Telecommunications Data breaches Government 105