CenturyLink Company Cyber Security Posture
centurylink.comCenturyLink (NYSE: CTL) is a technology leader delivering hybrid networking, cloud connectivity, and security solutions to customers around the world. Through its extensive global fiber network, CenturyLink provides secure and reliable services to meet the growing digital demands of businesses and consumers. CenturyLink strives to be the trusted connection to the networked world and is focused on delivering technology that enhances the customer experience. Learn more at http://news.centurylink.com/.
CenturyLink Company Details
centurylink
24839 employees
229889.0
541
IT Services and IT Consulting
centurylink.com
Scan still pending
CEN_2031114
In-progress
CenturyLink Risk Score (AI oriented)Between 900 and 1000
This score is AI-generated and less favored by cyber insurers, who prefer the TPRM score.
CenturyLink Global Score.png)
CenturyLink Company Scoring based on AI Models
| Model Name | Date | Description | Current Score Difference | Score |
|---|---|---|---|---|
| AVERAGE-Industry | 03-12-2025 | This score represents the average cybersecurity rating of companies already scanned within the same industry. It provides a benchmark to compare an individual company's security posture against its industry peers. | N/A | Between 900 and 1000 |
CenturyLink Company Cyber Security News & History
| Entity | Type | Severity | Impact | Seen | Url ID | Details | View |
|---|---|---|---|---|---|---|---|
| CenturyLink | Data Leak | 85 | 3 | 10/2019 | CEN32023423 | Link | |
Rankiteo Explanation : Attack with significant impact with internal employee data leaksDescription: The personal information of hundreds of thousands of CenturyLink customers, including names, addresses, email addresses, and phone numbers was exposed online. A database of 2.8m records containing sensitive information regarding hundreds of thousands of CenturyLink’s customers was left open online for anyone with internet access to see. They included multiple pieces of personal information including name, email address, phone number, and address, along with account-specific information. The database comprised API logs with customer information and contained more than 2.8 million records in total. CenturyLink said to the affected customers. "We will continue to work to protect customer information, takes the protection of our customers’ information seriously, and we will work to ensure that we earn our customers’ trust. | |||||||
| lumentechnologies | Ransomware | 75 | 2 | 03/2023 | LUM33321023 | Link | |
Rankiteo Explanation : Attack limited on finance or reputationDescription: Lumen Technologies, a leading provider of telecommunications services, identified two cybersecurity issues, including a ransomware attack. One of the events involved a ransomware attack on a small number of its servers that operate a segmented hosting service. The corporation simply acknowledged that the issue "is currently impairing the operations of a small number of the Company's enterprise customers." It gave no further information regarding the family of ransomware that infected its systems. Lumen developed improved security software following the ransomware attack's detection, which enabled the business to identify a different incursion. | |||||||
CenturyLink Company Subsidiaries
CenturyLink (NYSE: CTL) is a technology leader delivering hybrid networking, cloud connectivity, and security solutions to customers around the world. Through its extensive global fiber network, CenturyLink provides secure and reliable services to meet the growing digital demands of businesses and consumers. CenturyLink strives to be the trusted connection to the networked world and is focused on delivering technology that enhances the customer experience. Learn more at http://news.centurylink.com/.
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CenturyLink Cyber Security News
The 30-year-old internet backdoor law that came back to bite
The Wall Street Journal first reported Friday that a Chinese government hacking group dubbed Salt Typhoon broke into three of the largest U.S. ...
Business & Enterprise Technology | Solutions | Lumen
Welcome to Lumen. Explore our leading enterprise technology solutions for Networking, Security, Edge Cloud, Collaboration, SASE, DDoS and Managed Services.
CenturyLink Promotes Zain Ahmed to Regional VP of Federal Government Business
In his new role, Ahmed will be responsible for CenturyLink's civilian, special programs and U.S. Department of Defense sales. He will lead a ...
CenturyLink/Level 3 Outage: A Botched Response to a DDoS Attack?
A major CenturyLink/Level 3 outage on Sunday that took down websites across the US and EU has been blamed by the carrier on an “offending ...
Everyone has a role to play in internet safety
A month dedicated to promoting online safety and privacy, is everyone plays a part in keeping the internet safe.
Telecom giant Lumen says it discovered two separate cyber intrusions
Multibillion-dollar telecommunications firm Lumen Technologies told regulators Monday that it had discovered two cybersecurity incidents.
NTCA Conference Highlights Collaboration With Municipalities, Cyber Security, and Supply Chain Woes
Technology and broadband would enable growth of rural communities using data analytics, and this goal has been accelerated because of the ...
Resilience, teamwork key to combat cyber 'bad guys'
Schneck said resilience needs to be part of the gameplan to combat hackers, and, nationally and globally, that requires comparing notes and letting someone ...
CenturyLink Unveils Strategic Govt Exec Leadership Team; David Young Comments
CenturyLink (NYSE: CTL) has named eight executives to the strategic government leadership team that will work to support federal agencies, ...
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Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
CenturyLink CyberSecurity History Information
How many cyber incidents has CenturyLink faced?
Total Incidents: According to Rankiteo, CenturyLink has faced 2 incidents in the past.
What types of cybersecurity incidents have occurred at CenturyLink?
Incident Types: The types of cybersecurity incidents that have occurred incidents Data Leak and Ransomware.
How does CenturyLink detect and respond to cybersecurity incidents?
Detection and Response: The company detects and responds to cybersecurity incidents through remediation measures with Developed improved security software and communication strategy with CenturyLink informed affected customers.
Incident Details
Can you provide details on each incident?
Incident : Ransomware
Title: Ransomware Attack on Lumen Technologies
Description: Lumen Technologies, a leading provider of telecommunications services, identified two cybersecurity issues, including a ransomware attack. One of the events involved a ransomware attack on a small number of its servers that operate a segmented hosting service. The corporation simply acknowledged that the issue 'is currently impairing the operations of a small number of the Company's enterprise customers.' It gave no further information regarding the family of ransomware that infected its systems. Lumen developed improved security software following the ransomware attack's detection, which enabled the business to identify a different incursion.
Type: Ransomware
Incident : Data Breach
Title: CenturyLink Customer Data Exposure
Description: The personal information of hundreds of thousands of CenturyLink customers, including names, addresses, email addresses, and phone numbers was exposed online.
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 Data Leak.
Impact of the Incidents
What was the impact of each incident?
Incident : Ransomware LUM33321023
Systems Affected: Segmented hosting service servers
Operational Impact: Impairing the operations of a small number of the Company's enterprise customers
Incident : Data Breach CEN32023423
Data Compromised: names, addresses, email addresses, phone numbers, account-specific information
Systems Affected: database
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 and Account-specific Information.
Which entities were affected by each incident?
Incident : Ransomware LUM33321023
Entity Type: Corporation
Industry: Telecommunications
Customers Affected: Small number of enterprise customers
Incident : Data Breach CEN32023423
Entity Type: Corporation
Industry: Telecommunications
Customers Affected: hundreds of thousands
Response to the Incidents
What measures were taken in response to each incident?
Incident : Ransomware LUM33321023
Remediation Measures: Developed improved security software
Incident : Data Breach CEN32023423
Communication Strategy: CenturyLink informed affected customers
Data Breach Information
What type of data was compromised in each breach?
Incident : Data Breach CEN32023423
Type of Data Compromised: Personal Information, Account-specific Information
Number of Records Exposed: 2.8 million
File Types Exposed: API logs
Personally Identifiable Information: names, addresses, email addresses, phone numbers
What measures does the company take to prevent data exfiltration?
Prevention of Data Exfiltration: The company takes the following measures to prevent data exfiltration: Developed improved security software.
Investigation Status
How does the company communicate the status of incident investigations to stakeholders?
Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through was CenturyLink informed affected customers.
Stakeholder and Customer Advisories
Were there any advisories issued to stakeholders or customers for each incident?
Incident : Data Breach CEN32023423
Customer Advisories: CenturyLink informed affected customers
What advisories does the company provide to stakeholders and customers following an incident?
Advisories Provided: The company provides the following advisories to stakeholders and customers following an incident: was CenturyLink informed affected customers.
Additional Questions
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 names, addresses, email addresses, phone numbers and account-specific information.
What was the most significant system affected in an incident?
Most Significant System Affected: The most significant system affected in an incident was Segmented hosting service servers and database.
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 names, addresses, email addresses, phone numbers and account-specific information.
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 2.8M.
Stakeholder and Customer Advisories
What was the most recent customer advisory issued?
Most Recent Customer Advisory: The most recent customer advisory issued was was an CenturyLink informed affected customers.
What Do We Measure?
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.
These are some of the factors we use to calculate the overall score:
Identify exposed access points, detect misconfigured SSL certificates, and uncover vulnerabilities across the network infrastructure.
Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.
Monitor and manage all IT assets and their configurations to ensure accurate, real-time visibility across the company's technology environment.
Leverage real-time insights on active threats, malware campaigns, and emerging vulnerabilities to proactively defend against evolving cyberattacks.
