• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

Global Louis Vuitton data breach impacts UK, South Korea, and Turkey

 | 

Experts uncover critical flaws in Kigen eSIM technology affecting billions

 | 

Spain awarded €12.3 million in contracts to Huawei

 | 

Patch immediately: CVE-2025-25257 PoC enables remote code execution on Fortinet FortiWeb

 | 

Wing FTP Server flaw actively exploited shortly after technical details were made public

 | 

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 53

 | 

Security Affairs newsletter Round 532 by Pierluigi Paganini – INTERNATIONAL EDITION

 | 

McDonald’s job app exposes data of 64 Million applicants

 | 

Athlete or Hacker? Russian basketball player accused in U.S. ransomware case

 | 

U.S. CISA adds Citrix NetScaler ADC and Gateway flaw to its Known Exploited Vulnerabilities catalog

 | 

UK NCA arrested four people over M&S, Co-op cyberattacks

 | 

PerfektBlue Bluetooth attack allows hacking infotainment systems of Mercedes, Volkswagen, and Skoda

 | 

Qantas data breach impacted 5.7 million individuals

 | 

DoNot APT is expanding scope targeting European foreign ministries

 | 

Nippon Steel Solutions suffered a data breach following a zero-day attack

 | 

Iranian group Pay2Key.I2P ramps Up ransomware attacks against Israel and US with incentives for affiliates

 | 

Hackers weaponize Shellter red teaming tool to spread infostealers

 | 

Microsoft Patch Tuesday security updates for July 2025 fixed a zero-day

 | 

Italian police arrested a Chinese national suspected of cyberespionage on a U.S. warrant

 | 

U.S. CISA adds MRLG, PHPMailer, Rails Ruby on Rails, and Synacor Zimbra Collaboration Suite flaws to its Known Exploited Vulnerabilities catalog

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Cyber Crime
  • Data Breach
  • Hacking
  • Security
  • TalkTalk confirms data breach involving a third-party platform

TalkTalk confirms data breach involving a third-party platform

Pierluigi Paganini January 27, 2025

UK telecommunications firm TalkTalk disclosed a data breach after a threat actor announced the hack on a cybercrime forum.

UK telecommunications company TalkTalk confirmed a data breach after a threat actor claimed responsibility for the cyber attack on a cybercrime forum and offered for sale alleged customer data. 

A threat actor named “b0nd” claimed the theft of data of over 18.8 million TalkTalk subscribers’ data, including names, email addresses, IP addresses, phone numbers, and PINs.

The claim of 18.8 million affected TalkTalk customers is doubtful, as the company does not have that many subscribers.

The data breach involved a third-party platform, however the company attempted to downplay the scope of the incident.

TalkTalk announced that the an investigation is ongoing, but the company spokesperson Liz Holloway told TechCrunch that the claim of 18.8 million affected users is “wholly inaccurate and significantly overstated.”

“As part of our regular security monitoring, given our ongoing focus on protecting customers’ personal data, we were made aware of unexpected access to, and misuse of, one of our third-party suppliers’ systems,” Holloway told TechCrunch. “Our Security Incident Response team are continuing to work with the supplier regarding this matter and protective containment steps were taken immediately.”

The telecommunications company is working with the third-party supplier to resolve the issue.

TalkTalk did not name the third-party supplier that was breached by the threat actors, however the image published by b0nd suggests that the data was stolen from the Ascendon SaaS platform used by the telecommunications provider.

CSG admitted that the data published by the threat actors were stolen from their platform, but did not disclose a security breach of their systems. The company also added that only one customer was impacted.

“On Jan. 21, 2025, CSG learned that an external party gained unauthorized access to a single provider’s data residing on a CSG platform,” CSG told BleepingComputer. “We have no evidence that CSG’s technologies and systems were compromised or that CSG was the cause of the unexpected access to the data. CSG provided immediate containment and is actively supporting our customer.”

In 2015, TalkTalk Telecom Group announced that four million subscribers have been impacted by a “sustained cyberattack” that hit its servers.

At the time, threat actors accessed the personal details of over 150,000 customers.  

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

Pierluigi Paganini

(SecurityAffairs – hacking, data breach)


facebook linkedin twitter

Cybercrime data breach Hacking hacking news information security news IT Information Security Pierluigi Paganini Security Affairs Security News TalkTalk

you might also like

Pierluigi Paganini July 14, 2025
Global Louis Vuitton data breach impacts UK, South Korea, and Turkey
Read more
Pierluigi Paganini July 14, 2025
Experts uncover critical flaws in Kigen eSIM technology affecting billions
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    Global Louis Vuitton data breach impacts UK, South Korea, and Turkey

    Data Breach / July 14, 2025

    Experts uncover critical flaws in Kigen eSIM technology affecting billions

    Security / July 14, 2025

    Spain awarded €12.3 million in contracts to Huawei

    Intelligence / July 14, 2025

    Patch immediately: CVE-2025-25257 PoC enables remote code execution on Fortinet FortiWeb

    Security / July 13, 2025

    Wing FTP Server flaw actively exploited shortly after technical details were made public

    Hacking / July 13, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT