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Category — T-Mobile
U.S. Telecom Giant T-Mobile Detects Network Intrusion Attempts from Wireline Provider

U.S. Telecom Giant T-Mobile Detects Network Intrusion Attempts from Wireline Provider

Nov 28, 2024 Network Security / Cyber Espionage
U.S. telecom service provider T-Mobile said it recently detected attempts made by bad actors to infiltrate its systems in recent weeks but noted that no sensitive data was accessed. These intrusion attempts "originated from a wireline provider's network that was connected to ours," Jeff Simon, chief security officer at T-Mobile, said in a statement. "We see no instances of prior attempts like this." The company further said its security defenses prevented the threat actors from disrupting its services or obtaining customer information. It has since confirmed that it cut off connectivity to the unnamed provider's network. It did not explicitly attribute the activity to any known threat actor or group, but noted that it has shared its findings with the U.S. government. Speaking to Bloomberg, Simon said the company observed the attackers running discovery-related commands on routers to probe the topography of the network, adding the attacks were containe...
Chinese Hackers Exploit T-Mobile and Other U.S. Telecoms in Broader Espionage Campaign

Chinese Hackers Exploit T-Mobile and Other U.S. Telecoms in Broader Espionage Campaign

Nov 19, 2024 Cyber Espionage / Data Breach
U.S. telecoms giant T-Mobile has confirmed that it was also among the companies that were targeted by Chinese threat actors to gain access to valuable information. The adversaries, tracked as Salt Typhoon , breached the company as part of a "monthslong campaign" designed to harvest cellphone communications of "high-value intelligence targets." It's not clear what information was taken, if any, during the malicious activity. "T-Mobile is closely monitoring this industry-wide attack, and at this time, T-Mobile systems and data have not been impacted in any significant way, and we have no evidence of impacts to customer information," a spokesperson for the company was quoted as saying to The Wall Street Journal. "We will continue to monitor this closely, working with industry peers and the relevant authorities." With the latest development, T-Mobile has joined a list of major organizations like AT&T, Verizon, and Lumen Technologies that...
Beyond Compliance: The Advantage of Year-Round Network Pen Testing

Beyond Compliance: The Advantage of Year-Round Network Pen Testing

Nov 18, 2024Penetration Testing / Network Security
IT leaders know the drill—regulators and cyber insurers demand regular network penetration testing to keep the bad guys out. But here's the thing: hackers don't wait around for compliance schedules. Most companies approach network penetration testing on a set schedule, with the most common frequency being twice a year (29%), followed by three to four times per year (23%) and once per year (20%), according to the Kaseya Cybersecurity Survey Report 2024 . Compliance-focused testing can catch vulnerabilities that exist at the exact time of testing, but it's not enough to stay ahead of attackers in a meaningful way. Why More Frequent Testing Makes Sense When companies test more often, they're not just checking a box for compliance—they're actually protecting their networks. The Kaseya survey also points out that the top drivers for network penetration testing are: Cybersecurity Control and Validation (34%) – ensuring the security controls work and vulnerabilities are minimized. Re...
T-Mobile Admits Lapsus$ Hackers Gained Access to its Internal Tools and Source Code

T-Mobile Admits Lapsus$ Hackers Gained Access to its Internal Tools and Source Code

Apr 23, 2022
Telecom company T-Mobile on Friday confirmed that it was the victim of a security breach in March after the LAPSUS$ mercenary gang managed to gain access to its networks. The acknowledgment came after investigative journalist Brian Krebs  shared  internal chats belonging to the core members of the group indicating that LAPSUS$ breached the company several times in March  prior to the arrest  of its seven members. T-Mobile, in a statement, said that the incident occurred "several weeks ago, with the "bad actor" using stolen credentials to access internal systems. "The systems accessed contained no customer or government information or other similarly sensitive information, and we have no evidence that the intruder was able to obtain anything of value," it added. The VPN credentials for initial access are said to have been obtained from illicit websites like Russian Market with the goal of gaining control of T-Mobile employee accounts, ultimately allowing ...
cyber security

Creating, Managing and Securing Non-Human Identities

websitePermisoCybersecurity / Identity Security
A new class of identities has emerged alongside traditional human users: non-human identities (NHIs). Permiso Security's new eBook details everything you need to know about managing and securing non-human identities, and strategies to unify identity security without compromising agility.
Hackers Compromise T-Mobile Employee' Email Accounts and Steal User' Data

Hackers Compromise T-Mobile Employee' Email Accounts and Steal User' Data

Mar 05, 2020
If you are a T-Mobile customer, this news may concern you. US-based telecom giant T-Mobile has suffered yet another data breach incident that recently exposed personal and accounts information of both its employees and customers to unknown hackers. What happened? In a breach notification posted on its website, T-Mobile today said its cybersecurity team recently discovered a sophisticated cyberattack against the email accounts of some of its employees that resulted in unauthorized access to the sensitive information contained in it, including details for its customers and other employees. Although the telecom company did not disclose how the breach happened, when it happened, and exactly how many employees and users were affected, it did confirm that the leaked information on its users doesn't contain financial information like credit card and Social Security numbers. What type of information was accessed? The exposed data of an undisclosed number of affected users incl...
T-Mobile Suffers Data Breach Affecting Prepaid Wireless Customers

T-Mobile Suffers Data Breach Affecting Prepaid Wireless Customers

Nov 22, 2019
Are you a T-Mobile prepaid customer? If yes, you should immediately create or update your associated account PIN/passcode as additional protection. The US-based telecom giant T-Mobile today disclosed a yet another data breach incident that recently exposed potentially personal information of some of the customers using its prepaid services. What happened? In a statement posted on its website, T-Mobile said its cybersecurity team discovered a "malicious, unauthorized access" to information associated with an undisclosed number of its prepaid wireless account customers. However, the company did not disclose precisely how the breach happened, when it happened, and how the attackers unauthorizedly managed to access the private information of the company's prepaid customers. What type of information was accessed? The stolen data associated with customers' prepaid wireless accounts include their: names, phone numbers, billing addresses (if customers provided ...
Verizon, AT&T, Sprint and T-Mobile to replace SMS with RCS Messaging in 2020

Verizon, AT&T, Sprint and T-Mobile to replace SMS with RCS Messaging in 2020

Oct 25, 2019
Mobile carriers in the United States will finally offer a universal cross-carrier communication standard for the next-generation RCS messaging service that is meant to replace SMS and has the potential to change the way consumers interact with brands for years to come. All major United States mobile phone carriers, including AT&T, Verizon, T-Mobile, and Sprint, have joined forces to launch a new initiative that will replace SMS with RCS mobile messaging standard . What's more? The initiative is also working with its carrier ownership group and other companies to develop and deploy the new RCS standard in a new text messaging app for Android phones that is expected to be launched in 2020. The goal of this joint venture , dubbed the Cross Carrier Messaging Initiative (CCMI) , is to deliver the GSMA's Rich Communications Service (RCS) industry standard to consumers and businesses on each of the four carriers, both in the United States and globally. "Efforts like...
T-Mobile Hacked — 2 Million Customers' Personal Data Stolen

T-Mobile Hacked — 2 Million Customers' Personal Data Stolen

Aug 24, 2018
T-Mobile today confirmed that the telecom giant suffered a security breach on its US servers on August 20 that may have resulted in the leak of "some" personal information of up to 2 million T-Mobile customers. The leaked information includes customers' name, billing zip code, phone number, email address, account number, and account type (prepaid or postpaid). However, the good news is that no financial information like credit card numbers, social security numbers, or passwords, were compromised in the security breach. According to a brief blog post published by the company detailing the incident, its cybersecurity team detected and shut down an "unauthorized capture of some information" on Monday, August 20. Although the company has not revealed how the hackers managed to hack into its servers neither it disclosed the exact number of customers affected by the data breach, a T-Mobile spokesperson told Motherboard that less than 3 percent of its 77 m...
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