Company Details
lumentechnologies
49,694
586,657
517
lumen.com
0
LUM_6397940
In-progress


Lumen Technologies Company CyberSecurity Posture
lumen.comLumen connects the world. We digitally connect people, data and applications – quickly, securely and effortlessly. Everything we do at Lumen takes advantage of our network strength. From metro connectivity to long-haul data transport to our edge cloud, security, and managed service capabilities, we meet our customers’ needs today and as they build for tomorrow.
Company Details
lumentechnologies
49,694
586,657
517
lumen.com
0
LUM_6397940
In-progress
Between 750 and 799

Lumen Technologies Global Score (TPRM)XXXX

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.
Description: The Maine Office of the Attorney General disclosed a data breach affecting CenturyLink Communications between August 20 and August 31, 2020. The incident stemmed from a sophisticated password-guessing attack targeting the MyCenturyLink customer portal, compromising 1,942 accounts. Exposed data included usernames, email addresses, full names (first and last), service addresses, billing addresses, and related account details. While no financial or highly sensitive information (e.g., Social Security numbers, payment card data) was confirmed stolen, the breach risked unauthorized access to personal and account-specific information, potentially enabling phishing, identity fraud, or further targeted attacks. CenturyLink responded by issuing written notifications to affected customers between September 21–25, 2020, though the delay between discovery and disclosure raised concerns about proactive mitigation. The attack highlighted vulnerabilities in authentication mechanisms, emphasizing the need for stronger password policies and multi-factor authentication (MFA) to prevent credential-stuffing exploits.
Description: 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.


No incidents recorded for Lumen Technologies in 2026.
No incidents recorded for Lumen Technologies in 2026.
No incidents recorded for Lumen Technologies in 2026.
Lumen Technologies cyber incidents detection timeline including parent company and subsidiaries

Lumen connects the world. We digitally connect people, data and applications – quickly, securely and effortlessly. Everything we do at Lumen takes advantage of our network strength. From metro connectivity to long-haul data transport to our edge cloud, security, and managed service capabilities, we meet our customers’ needs today and as they build for tomorrow.


(Formerly etisalat UAE) For more than four decades, we have connected people and now we’ve evolved to become the digital telco of the future. Our mission is to grow, transform and excel as the region’s technology leader while enhancing digital customer experience and operation agility. e& UAE offe
Millicom (NASDAQ U.S.: TIGO, Nasdaq) is a leading provider of fixed and mobile telecommunications services in Latin America. Through our TIGO® and Tigo Business® brands, we provide a wide range of digital services and products, including TIGO Money for mobile financial services, TIGO Sports for loca

We are a forward-focused digital champion always been focused on innovation and evolution. Our purpose is to create and bring greater dimension and richness to people’s personal and professional lives. With stc, You will always be empowered to focus on delivering what’s next through collaborati

Orange is one of the world’s leading telecommunications operators with revenues of 40.3 billion euros in 2024 and 127,000 employees worldwide at 31 December 2024, including 71,000 employees in France. The Group has a total customer base of 291 million customers worldwide at 31 December 2024, inclu

Telcel (Radiomóvil Dipsa) es subsidiaria de América Móvil, uno de los mayores proveedores de comunicaciones celulares de Latinoamérica, grupo líder con inversiones en telecomunicaciones en varios países del continente americano. Telcel es la empresa de telefonía celular líder en México. Nuestra s
Make a new start. A start that will build beautiful relationships, shape millions of ideas. Enable a new way to live, learn, work and play. At Jio, we build products and services of the future to empower billions of Indians make their dreams a reality. Jio is about YOU. Join the movement to make I

vivo is a technology company that creates great products based on a design-driven value, with smart devices and intelligent services as its core. The company aims to build a bridge between humans and the digital world. Through unique creativity, vivo provides users with an increasingly convenient mo
VEON is a global digital operator headquartered in Dubai, providing connectivity and digital services across dynamic frontier markets that are home to more than 6% of the world’s population. With our digital operators, we transform lives through technology-driven services that empower millions and
Tata Communications is a digital ecosystem enabler that powers today’s fast-growing digital economy. We enable the digital transformation of enterprises globally, including 300 of the Fortune 500. We carry around 30% of the world’s internet routes and connects businesses to 60% of the world’s cloud
.png)
What Happened? Shares of telecommunications infrastructure company Lumen Technologies NYSE:LUMN fell 4.2% in the afternoon session after a...
Lumen Technologies has achieved the Palo Alto Networks NextWave Cortex XSIAM Select Specialization Status in Singapore. This specialization recognizes partners...
Discover how Lumen Technologies is transforming its valuation with cutting-edge cybersecurity and networking services reshaping the industry...
Despite recent momentum, the most widely followed narrative values Lumen Technologies at $7.23 per share. This is below the last close of $8.11,...
The Federal Communications Commission is set to vote on an order rescinding new cybersecurity requirements enacted after the Salt Typhoon...
Agency votes to roll back telecom security requirements despite massive breach.
While much of the telecom sector's cybersecurity focus is on network operators and their precious customer data, their tech suppliers are...
Telecom vendor Ribbon Communications has reportedly been the victim of a nation-state hack. The stealth attack saw intruders access Ribbon's...
Vancouver,Kelowna, and Delta, British Columbia--(Newsfile Corp. - October 2, 2025) - Investorideas.com, a global news source and expert investing resource...

Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
The official website of Lumen Technologies is http://www.lumen.com.
According to Rankiteo, Lumen Technologies’s AI-generated cybersecurity score is 755, reflecting their Fair security posture.
According to Rankiteo, Lumen Technologies currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
According to Rankiteo, Lumen Technologies has not been affected by any supply chain cyber incidents, and no incident IDs are currently listed for the organization.
According to Rankiteo, Lumen Technologies is not certified under SOC 2 Type 1.
According to Rankiteo, Lumen Technologies does not hold a SOC 2 Type 2 certification.
According to Rankiteo, Lumen Technologies is not listed as GDPR compliant.
According to Rankiteo, Lumen Technologies does not currently maintain PCI DSS compliance.
According to Rankiteo, Lumen Technologies is not compliant with HIPAA regulations.
According to Rankiteo,Lumen Technologies is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Lumen Technologies operates primarily in the Telecommunications industry.
Lumen Technologies employs approximately 49,694 people worldwide.
Lumen Technologies presently has no subsidiaries across any sectors.
Lumen Technologies’s official LinkedIn profile has approximately 586,657 followers.
Lumen Technologies is classified under the NAICS code 517, which corresponds to Telecommunications.
No, Lumen Technologies does not have a profile on Crunchbase.
Yes, Lumen Technologies maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/lumentechnologies.
As of January 21, 2026, Rankiteo reports that Lumen Technologies has experienced 3 cybersecurity incidents.
Lumen Technologies has an estimated 9,783 peer or competitor companies worldwide.
Incident Types: The types of cybersecurity incidents that have occurred include Ransomware, Breach and Data Leak.
Detection and Response: The company detects and responds to cybersecurity incidents through an communication strategy with centurylink informed affected customers, and remediation measures with developed improved security software, and remediation measures with customer notifications (via mail), and communication strategy with written notifications to affected customers..
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
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
Title: CenturyLink Communications Data Breach (2020)
Description: The Maine Office of the Attorney General reported a data breach involving CenturyLink Communications, with the breach occurring between August 20 and August 31, 2020. Approximately 1,942 accounts were affected due to a sophisticated password guessing attack on the MyCenturyLink customer account website, potentially exposing usernames, email addresses, first and last names, service and billing addresses, and other related information. Written notifications were sent to customers starting September 21, 2020, with all letters mailed by September 25, 2020.
Date Publicly Disclosed: 2020-09-21
Type: Data Breach
Attack Vector: Password Guessing Attack
Vulnerability Exploited: Weak or Reused Passwords
Common Attack Types: The most common types of attacks the company has faced is Ransomware.
Identification of Attack Vectors: The company identifies the attack vectors used in incidents through MyCenturyLink Customer Account Website.

Data Compromised: Names, Addresses, Email addresses, Phone numbers, Account-specific information
Systems Affected: database

Systems Affected: Segmented hosting service servers
Operational Impact: Impairing the operations of a small number of the Company's enterprise customers

Data Compromised: Usernames, Email addresses, First and last names, Service addresses, Billing addresses, Other related information
Systems Affected: MyCenturyLink Customer Account Website
Identity Theft Risk: Potential
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Personal Information, Account-Specific Information, , Usernames, Email Addresses, First And Last Names, Service Addresses, Billing Addresses, Other Related Information and .

Entity Name: CenturyLink
Entity Type: Corporation
Industry: Telecommunications
Customers Affected: hundreds of thousands

Entity Name: Lumen Technologies
Entity Type: Corporation
Industry: Telecommunications
Customers Affected: Small number of enterprise customers

Entity Name: CenturyLink Communications (now Lumen Technologies)
Entity Type: Telecommunications Company
Industry: Telecommunications
Location: United States
Customers Affected: 1,942

Communication Strategy: CenturyLink informed affected customers

Remediation Measures: Developed improved security software

Remediation Measures: Customer Notifications (via mail)
Communication Strategy: Written Notifications to Affected Customers

Type of Data Compromised: Personal information, Account-specific information
Number of Records Exposed: 2.8 million
File Types Exposed: API logs
Personally Identifiable Information: namesaddressesemail addressesphone numbers

Type of Data Compromised: Usernames, Email addresses, First and last names, Service addresses, Billing addresses, Other related information
Number of Records Exposed: 1,942
Sensitivity of Data: Moderate (PII)
Data Exfiltration: Potential
Personally Identifiable Information: Yes
Prevention of Data Exfiltration: The company takes the following measures to prevent data exfiltration: Developed improved security software, , Customer Notifications (via mail), .

Regulatory Notifications: Maine Office of the Attorney General

Source: Maine Office of the Attorney General
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: Maine Office of the Attorney General.
Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through CenturyLink informed affected customers and Written Notifications To Affected Customers.

Customer Advisories: CenturyLink informed affected customers

Customer Advisories: Written notifications sent between September 21–25, 2020
Advisories Provided: The company provides the following advisories to stakeholders and customers following an incident: were CenturyLink informed affected customers, Written Notifications Sent Between September 21–25, 2020 and .

Entry Point: MyCenturyLink Customer Account Website

Root Causes: Weak Or Reused Passwords Vulnerable To Guessing Attacks,
Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on 2020-09-21.
Most Significant Data Compromised: The most significant data compromised in an incident were names, addresses, email addresses, phone numbers, account-specific information, , Usernames, Email Addresses, First and Last Names, Service Addresses, Billing Addresses, Other Related Information and .
Most Significant System Affected: The most significant system affected in an incident was database and Segmented hosting service servers and MyCenturyLink Customer Account Website.
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were Email Addresses, phone numbers, email addresses, Other Related Information, Usernames, account-specific information, names, First and Last Names, Billing Addresses, addresses and Service Addresses.
Number of Records Exposed in Most Significant Breach: The number of records exposed in the most significant breach was 2.8M.
Most Recent Source: The most recent source of information about an incident is Maine Office of the Attorney General.
Most Recent Customer Advisory: The most recent customer advisory issued were an CenturyLink informed affected customers, Written notifications sent between September 21–25 and 2020.
Most Recent Entry Point: The most recent entry point used by an initial access broker was an MyCenturyLink Customer Account Website.
.png)
SummaryA command injection vulnerability (CWE-78) has been found to exist in the `wrangler pages deploy` command. The issue occurs because the `--commit-hash` parameter is passed directly to a shell command without proper validation or sanitization, allowing an attacker with control of `--commit-hash` to execute arbitrary commands on the system running Wrangler. Root causeThe commitHash variable, derived from user input via the --commit-hash CLI argument, is interpolated directly into a shell command using template literals (e.g., execSync(`git show -s --format=%B ${commitHash}`)). Shell metacharacters are interpreted by the shell, enabling command execution. ImpactThis vulnerability is generally hard to exploit, as it requires --commit-hash to be attacker controlled. The vulnerability primarily affects CI/CD environments where `wrangler pages deploy` is used in automated pipelines and the --commit-hash parameter is populated from external, potentially untrusted sources. An attacker could exploit this to: * Run any shell command. * Exfiltrate environment variables. * Compromise the CI runner to install backdoors or modify build artifacts. Credits Disclosed responsibly by kny4hacker. Mitigation * Wrangler v4 users are requested to upgrade to Wrangler v4.59.1 or higher. * Wrangler v3 users are requested to upgrade to Wrangler v3.114.17 or higher. * Users on Wrangler v2 (EOL) should upgrade to a supported major version.
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Supported versions that are affected are 7.1.14 and 7.2.4. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Supported versions that are affected are 7.1.14 and 7.2.4. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle VM VirtualBox accessible data as well as unauthorized access to critical data or complete access to all Oracle VM VirtualBox accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L).
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Supported versions that are affected are 7.1.14 and 7.2.4. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).
Vulnerability in the Oracle VM VirtualBox product of Oracle Virtualization (component: Core). Supported versions that are affected are 7.1.14 and 7.2.4. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle VM VirtualBox executes to compromise Oracle VM VirtualBox. While the vulnerability is in Oracle VM VirtualBox, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle VM VirtualBox. CVSS 3.1 Base Score 8.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H).

Get company history
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.
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.