UScellular
Company Details
Linkedin ID:
uscellular
Website:
Employees number:
7,583
Number of followers:
55,102
NAICS:
517
Industry Type:
Homepage:
http://www.uscellular.com
IP Addresses:
0
Company ID:
USC_1311879
Scan Status:
In-progress
UScellular Company CyberSecurity Posture
http://www.uscellular.com
Considering where to invest your time, talent and ambition? Select the team that’s determined to be the best, offering the ability to make a positive difference for every customer, a unique culture and competitive rewards. Choose UScellular. With more than 5.1 million customers, we are one of the nation’s largest wireless carriers. Consistently honored as a top workplace, we empower our 5,400+ associates to make meaningful contributions to our success and that of the communities where we live and work with outreach, education initiatives and volunteerism. Here, you’ll find a broad array of resources for learning and development. You’ll enjoy almost endless opportunities for career advancement and a highly supportive team defined by the Dynamic Organization, a culture rooted in diversity, relationships, respect, empowerment and innovation. If you’re determined to be the best, join our talent network. Then select your ideal opportunity to soar with an industry leader.
UScellular A.I CyberSecurity Scoring
UScellular Risk Score (AI oriented)Between 650 and 699
UScellular
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UScellular Global Score (TPRM)XXXX
UScellular
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UScellular Company CyberSecurity News & History
Past Incidents
4
Attack Types
1
UScellular
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: US mobile carrier in UScellular was hacked in December 2021 and its data was compromised in the attack. The personal information of 405 clients was stolen and the attackers also ported some of the affected customers' numbers. The company immediately disconnected the computer accessed by unauthorized individuals from the internet to contain the attack.
USCC Services, LLC d/b/a UScellular
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: The Maine Office of the Attorney General reported a data breach involving UScellular on February 13, 2024. The breach occurred on January 28, 2024, due to an external system breach (hacking), affecting 100 individuals, including 8 residents. Information compromised includes customer account numbers, names, addresses, and PIN codes, but sensitive personal information such as Social Security numbers and credit card details is masked and was not accessed.
US Cellular
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: The Maine Office of the Attorney General reported a data breach at US Cellular on September 18, 2020, involving hacking. The breach affected a total of 78 individuals, with 1 resident specifically impacted. The breach was discovered on September 23, 2020, and notifications were sent out on October 3, 2020.
UScellular
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: The Federal Communications Commission (FCC) disclosed a data breach affecting **UScellular** in early November 2022. Between **October 29 and October 31, 2022**, unauthorized actors gained access to the company’s systems, compromising **customer billing information**, including **names, addresses, PIN codes, and cellular telephone numbers**. While the exact number of impacted individuals remains undisclosed, the breach exposed sensitive personal data that could facilitate **identity theft, SIM-swapping attacks, or targeted phishing campaigns**. The incident highlights vulnerabilities in UScellular’s security protocols, raising concerns over the protection of customer data. Although no financial records (e.g., credit card details) or highly sensitive information (e.g., Social Security numbers) were reported as stolen, the exposure of **PIN codes**—often used for account authentication—poses a significant risk of **fraudulent account takeovers**. The breach underscores the growing threat of **cyber intrusions targeting telecom providers**, where even non-financial data can be weaponized for malicious purposes. UScellular has not publicly detailed the attack vector, but the FCC’s involvement suggests regulatory scrutiny over compliance with data protection standards.
UScellular Company Scoring based on AI Models
Cyber Incidents Likelihood 3 - 6 - 9 months
A.I Risk Score Likelihood 3 - 6 - 9 months
Underwriter Stats for UScellular
Incidents vs Telecommunications Industry Average (This Year)
No incidents recorded for UScellular in 2025.
Incidents vs All-Companies Average (This Year)
No incidents recorded for UScellular in 2025.
Incident Types UScellular vs Telecommunications Industry Avg (This Year)
No incidents recorded for UScellular in 2025.
Incident History — UScellular (X = Date, Y = Severity)
UScellular cyber incidents detection timeline including parent company and subsidiaries
UScellular Company Subsidiaries
Considering where to invest your time, talent and ambition? Select the team that’s determined to be the best, offering the ability to make a positive difference for every customer, a unique culture and competitive rewards. Choose UScellular. With more than 5.1 million customers, we are one of the nation’s largest wireless carriers. Consistently honored as a top workplace, we empower our 5,400+ associates to make meaningful contributions to our success and that of the communities where we live and work with outreach, education initiatives and volunteerism. Here, you’ll find a broad array of resources for learning and development. You’ll enjoy almost endless opportunities for career advancement and a highly supportive team defined by the Dynamic Organization, a culture rooted in diversity, relationships, respect, empowerment and innovation. If you’re determined to be the best, join our talent network. Then select your ideal opportunity to soar with an industry leader.
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UScellular CyberSecurity News
December 03, 2025 08:00 AM
FCC OKs $1B UScellular Deal After AT&T Drops DEI Policies
AT&T got the Federal Communications Commission's approval for its $1 billion UScellular deal Wednesday, following in the wake of rivals...
October 01, 2025 07:00 AM
Tech Talk: How to protect yourself from cyber attacks
Jessica Holt, with U.S. Cellular and T-Mobile, was in the studio to talk about being mindful of your digital habits and what security...
February 21, 2025 08:00 AM
TELEPHONE & DATA SYSTEMS INC /DE/ SEC 10-K Report
Telephone & Data Systems Inc. (TDS), a diversified telecommunications company, has released its 2023 Form 10-K report, detailing its...
January 16, 2025 08:00 AM
UPDATED: Incoming FCC Chair Carr Blasts Agency’s Response to Salt Typhoon Cyberattacks
Called the vote on new cybersecurity proposals 'partisan, uncoordinated, and counterproductive'
December 16, 2024 08:00 AM
UScellular and Palo Alto Networks Join Forces to Secure 5G
UScellular and Palo Alto Networks are teaming up once again to tackle the ever-growing security challenges of LTE, 5G and Gi-LAN networks.
July 18, 2024 07:00 AM
UScellular joins MxD to boost private networking tech in the US
UScellular noted it has deployed public 4G and 5G networks across states like Wisconsin, Iowa, Illinois and Nebraska.
July 17, 2024 07:00 AM
UScellular Joins MxD to Drive U.S. Manufacturing Innovation with 5G Private Cellular Networking
PRNewswire/ -- UScellular joins MxD as a member to lead the organization's focus on introducing private networking technologies to U.S....
May 14, 2024 07:00 AM
SIM Card Swap Scams
Not only do we use our phones for calls, texts, and emails, they act as another layer of cybersecurity.
April 19, 2024 07:00 AM
Cape: Privacy-First Mobile Carrier Company Raises $61 Million
Privacy-first mobile carrier Cape announced it raised $61 million in funding led by A* and Andreessen Horowitz. And XYZ Ventures, ex/ante,...
Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
UScellular CyberSecurity History Information
Official Website of UScellular
The official website of UScellular is http://www.uscellular.com.
UScellular’s AI-Generated Cybersecurity Score
According to Rankiteo, UScellular’s AI-generated cybersecurity score is 656, reflecting their Weak security posture.
How many security badges does UScellular’ have ?
According to Rankiteo, UScellular currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
Does UScellular have SOC 2 Type 1 certification ?
According to Rankiteo, UScellular is not certified under SOC 2 Type 1.
Does UScellular have SOC 2 Type 2 certification ?
According to Rankiteo, UScellular does not hold a SOC 2 Type 2 certification.
Does UScellular comply with GDPR ?
According to Rankiteo, UScellular is not listed as GDPR compliant.
Does UScellular have PCI DSS certification ?
According to Rankiteo, UScellular does not currently maintain PCI DSS compliance.
Does UScellular comply with HIPAA ?
According to Rankiteo, UScellular is not compliant with HIPAA regulations.
Does UScellular have ISO 27001 certification ?
According to Rankiteo,UScellular is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Industry Classification of UScellular
UScellular operates primarily in the Telecommunications industry.
Number of Employees at UScellular
UScellular employs approximately 7,583 people worldwide.
Subsidiaries Owned by UScellular
UScellular presently has no subsidiaries across any sectors.
UScellular’s LinkedIn Followers
UScellular’s official LinkedIn profile has approximately 55,102 followers.
NAICS Classification of UScellular
UScellular is classified under the NAICS code 517, which corresponds to Telecommunications.
UScellular’s Presence on Crunchbase
Yes, UScellular has an official profile on Crunchbase, which can be accessed here: https://www.crunchbase.com/organization/u-s-cellular.
UScellular’s Presence on LinkedIn
Yes, UScellular maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/uscellular.
Cybersecurity Incidents Involving UScellular
As of December 18, 2025, Rankiteo reports that UScellular has experienced 4 cybersecurity incidents.
Number of Peer and Competitor Companies
UScellular has an estimated 9,750 peer or competitor companies worldwide.
What types of cybersecurity incidents have occurred at UScellular ?
Incident Types: The types of cybersecurity incidents that have occurred include Breach.
How does UScellular detect and respond to cybersecurity incidents ?
Detection and Response: The company detects and responds to cybersecurity incidents through an containment measures with disconnected the computer from the internet..
Incident Details
Can you provide details on each incident ?
Title: UScellular Data Breach
Description: US mobile carrier UScellular was hacked in December 2021 and its data was compromised in the attack. The personal information of 405 clients was stolen and the attackers also ported some of the affected customers' numbers. The company immediately disconnected the computer accessed by unauthorized individuals from the internet to contain the attack.
Date Detected: December 2021
Type: Data Breach
Title: US Cellular Data Breach
Description: The Maine Office of the Attorney General reported that US Cellular experienced a data breach on September 18, 2020, involving hacking, which affected a total of 78 individuals, with 1 resident specifically impacted. The breach was discovered on September 23, 2020, and notifications were sent out on October 3, 2020.
Date Detected: 2020-09-23
Date Publicly Disclosed: 2020-10-03
Type: Data Breach
Attack Vector: Hacking
Title: Data Breach at USCC Services, LLC d/b/a UScellular
Description: The Maine Office of the Attorney General reported a data breach involving USCC Services, LLC d/b/a UScellular on February 13, 2024. The breach occurred on January 28, 2024, due to an external system breach (hacking), affecting 100 individuals, including 8 residents. Information compromised includes customer account numbers, names, addresses, and PIN codes, but sensitive personal information such as Social Security numbers and credit card details is masked and was not accessed.
Date Detected: 2024-01-28
Date Publicly Disclosed: 2024-02-13
Type: Data Breach
Attack Vector: External System Breach (Hacking)
Title: UScellular Data Breach (2022)
Description: The Federal Communications Commission reported a data breach involving UScellular on November 9, 2022. The breach occurred between October 29, 2022, and October 31, 2022, allowing unauthorized access to customer billing information, including names, addresses, PIN codes, and cellular telephone numbers. The number of affected individuals is currently unknown.
Date Detected: 2022-11-09
Date Publicly Disclosed: 2022-11-09
Type: Data Breach
What are the most common types of attacks the company has faced ?
Common Attack Types: The most common types of attacks the company has faced is Breach.
Impact of the Incidents
What was the impact of each incident ?
Incident : Data Breach USC123827222
Data Compromised: Personal Information
Incident : Data Breach USC532080425
Data Compromised: Customer account numbers, Names, Addresses, Pin codes
Incident : Data Breach USC1014090725
Data Compromised: Names, Addresses, Pin codes, Cellular telephone numbers
Identity Theft Risk: Potential (PIN codes and personal data exposed)
What types of data are most commonly compromised in incidents ?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Personal Information, Customer Account Numbers, Names, Addresses, Pin Codes, , Customer Billing Information, Personally Identifiable Information (Pii) and .
Which entities were affected by each incident ?
Incident : Data Breach USC123827222
Entity Name: UScellular
Entity Type: Mobile Carrier
Industry: Telecommunications
Location: United States
Customers Affected: 405
Incident : Data Breach USC350072925
Entity Name: US Cellular
Entity Type: Telecommunications Company
Industry: Telecommunications
Customers Affected: 78
Incident : Data Breach USC532080425
Entity Name: USCC Services, LLC d/b/a UScellular
Entity Type: Company
Industry: Telecommunications
Customers Affected: 100
Incident : Data Breach USC1014090725
Entity Name: UScellular
Entity Type: Telecommunications Provider
Industry: Telecommunications
Location: United States
Customers Affected: Unknown
Response to the Incidents
What measures were taken in response to each incident ?
Incident : Data Breach USC123827222
Containment Measures: Disconnected the computer from the internet
Data Breach Information
What type of data was compromised in each breach ?
Incident : Data Breach USC123827222
Type of Data Compromised: Personal Information
Number of Records Exposed: 405
Data Exfiltration: Yes
Personally Identifiable Information: Yes
Incident : Data Breach USC350072925
Number of Records Exposed: 78
Incident : Data Breach USC532080425
Type of Data Compromised: Customer account numbers, Names, Addresses, Pin codes
Number of Records Exposed: 100
Sensitivity of Data: Medium
Personally Identifiable Information: namesaddresses
Incident : Data Breach USC1014090725
Type of Data Compromised: Customer billing information, Personally identifiable information (pii)
Number of Records Exposed: Unknown
Sensitivity of Data: High (includes PIN codes and personal details)
Data Exfiltration: Likely (unauthorized access confirmed)
How does the company handle incidents involving personally identifiable information (PII) ?
Handling of PII Incidents: The company handles incidents involving personally identifiable information (PII) through by disconnected the computer from the internet.
Regulatory Compliance
Were there any regulatory violations and fines imposed for each incident ?
Incident : Data Breach USC1014090725
Regulatory Notifications: Reported to the Federal Communications Commission (FCC)
References
Where can I find more information about each incident ?
Incident : Data Breach USC350072925
Source: Maine Office of the Attorney General
Incident : Data Breach USC532080425
Source: Maine Office of the Attorney General
Date Accessed: 2024-02-13
Incident : Data Breach USC1014090725
Source: Federal Communications Commission (FCC)
Date Accessed: 2022-11-09
Where can stakeholders find additional resources on cybersecurity best practices ?
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: Maine Office of the Attorney General, and Source: Maine Office of the Attorney GeneralDate Accessed: 2024-02-13, and Source: Federal Communications Commission (FCC)Date Accessed: 2022-11-09.
Investigation Status
What is the current status of the investigation for each incident ?
Incident : Data Breach USC1014090725
Investigation Status: Ongoing (as of disclosure date)
Additional Questions
Incident Details
What was the most recent incident detected ?
Most Recent Incident Detected: The most recent incident detected was on December 2021.
What was the most recent incident publicly disclosed ?
Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on 2022-11-09.
Impact of the Incidents
What was the most significant data compromised in an incident ?
Most Significant Data Compromised: The most significant data compromised in an incident were Personal Information, customer account numbers, names, addresses, PIN codes, , names, addresses, PIN codes, cellular telephone numbers and .
Response to the Incidents
What containment measures were taken in the most recent incident ?
Containment Measures in Most Recent Incident: The containment measures taken in the most recent incident was Disconnected the computer from the internet.
Data Breach Information
What was the most sensitive data compromised in a breach ?
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were Personal Information, cellular telephone numbers, addresses, customer account numbers, names and PIN codes.
What was the number of records exposed in the most significant breach ?
Number of Records Exposed in Most Significant Breach: The number of records exposed in the most significant breach was 583.0.
References
What is the most recent source of information about an incident ?
Most Recent Source: The most recent source of information about an incident are Maine Office of the Attorney General and Federal Communications Commission (FCC).
Investigation Status
What is the current status of the most recent investigation ?
Current Status of Most Recent Investigation: The current status of the most recent investigation is Ongoing (as of disclosure date).
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Latest Global CVEs (Not Company-Specific)
Description
Nagios XI versions prior to 2026R1.1 are vulnerable to local privilege escalation due to an unsafe interaction between sudo permissions and application file permissions. A user‑accessible maintenance script may be executed as root via sudo and includes an application file that is writable by a lower‑privileged user. A local attacker with access to the application account can modify this file to introduce malicious code, which is then executed with elevated privileges when the script is run. Successful exploitation results in arbitrary code execution as the root user.
Risk Information
cvss4
Base: 8.6
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Description
Out of bounds read and write in V8 in Google Chrome prior to 143.0.7499.147 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Description
Use after free in WebGPU in Google Chrome prior to 143.0.7499.147 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Description
SIPGO is a library for writing SIP services in the GO language. Starting in version 0.3.0 and prior to version 1.0.0-alpha-1, a nil pointer dereference vulnerability is in the SIPGO library's `NewResponseFromRequest` function that affects all normal SIP operations. The vulnerability allows remote attackers to crash any SIP application by sending a single malformed SIP request without a To header. The vulnerability occurs when SIP message parsing succeeds for a request missing the To header, but the response creation code assumes the To header exists without proper nil checks. This affects routine operations like call setup, authentication, and message handling - not just error cases. This vulnerability affects all SIP applications using the sipgo library, not just specific configurations or edge cases, as long as they make use of the `NewResponseFromRequest` function. Version 1.0.0-alpha-1 contains a patch for the issue.
Risk Information
cvss4
Base: 8.7
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Description
GLPI is a free asset and IT management software package. Starting in version 9.1.0 and prior to version 10.0.21, an unauthorized user with an API access can read all knowledge base entries. Users should upgrade to 10.0.21 to receive a patch.
Risk Information
cvss3
Base: 6.5
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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Every week, Rankiteo analyzes billions of signals to give organizations a sharper, faster view of emerging risks. With deeper, more actionable intelligence at their fingertips, security teams can outpace threat actors, respond instantly to Zero-Day attacks, and dramatically shrink their risk exposure window.
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Network Security
Identify exposed access points, detect misconfigured SSL certificates, and uncover vulnerabilities across the network infrastructure.
SBOM (Software Bill of Materials)
Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.
CMDB (Configuration Management Database)
Monitor and manage all IT assets and their configurations to ensure accurate, real-time visibility across the company's technology environment.
Threat Intelligence
Leverage real-time insights on active threats, malware campaigns, and emerging vulnerabilities to proactively defend against evolving cyberattacks.
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