Telefónica
Company Details
Linkedin ID:
telefonica
Website:
Employees number:
106,358
Number of followers:
1,274,432
NAICS:
517
Industry Type:
Homepage:
telefonica.com
IP Addresses:
160
Company ID:
TEL_2590753
Scan Status:
Completed
Telefónica Company CyberSecurity Posture
telefonica.com
Telefónica is today one of the largest telecommunications companies in the world in terms of market capitalisation and number of customers. We have the best infrastructure, as well as an innovative range of digital and data services; therefore, we are favorably positioned to meet the needs of our customers and capture growth in new businesses. We are sensitive to the new challenges demanded by society today and, therefore, we provide the means to facilitate communication between people, providing them with the most secure and cutting-edge technology. Our vision is focused on technology making people's lives easier and our aim is to promote progress in that direction, so that technology can make a positive impact on the world both socially and environmentally, and, ultimately, so as to provide value and trust in an ever-changing and accelerating world. Digital life is life itself, and technology is an essential part of being human. We want to create, protect and boost connections in life so people can choose a world of unlimited possibilities. We want to be a company in which our clients, employees, suppliers, shareholders, and society in general can trust. In order to achieve this, we communicate our strategy, business model and most relevant data to our stakeholders in a clear and transparent manner, so as to show the company's ability to create value.
Telefónica A.I CyberSecurity Scoring
Telefónica Risk Score (AI oriented)Between 650 and 699
Telefónica
Updated:
- Powered by our proprietary A.I cyber incident model
- Insurance preferes TPRM score to calculate premium
Telefónica Global Score (TPRM)XXXX
Telefónica
- Instant access to detailed risk factors
- Benchmark vs. industry & size peers
- Vulnerabilities
- Findings
Telefónica Company CyberSecurity News & History
Past Incidents
1
Attack Types
1
Telefónica
Ransomware
Rankiteo Explanation
Attack threatening the organization’s existence
Description: A cybercriminal known as Rey, part of the Hellcat ransomware operation, claims to have stolen 106GB of sensitive data from Telefónica in May 2025. The stolen data includes internal communications, purchase orders, logs, customer records, and various employee data. Rey has released a 2.6GB sample and is threatening to release the full batch unless a payment is made. Telefónica has downplayed the incident, stating that the data is old and there was no new breach.
Telefónica 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 Telefónica
Incidents vs Telecommunications Industry Average (This Year)
Telefónica has 69.49% more incidents than the average of same-industry companies with at least one recorded incident.
Incidents vs All-Companies Average (This Year)
Telefónica has 56.25% more incidents than the average of all companies with at least one recorded incident.
Incident Types Telefónica vs Telecommunications Industry Avg (This Year)
Telefónica reported 1 incidents this year: 0 cyber attacks, 1 ransomware, 0 vulnerabilities, 0 data breaches, compared to industry peers with at least 1 incident.
Incident History — Telefónica (X = Date, Y = Severity)
Telefónica cyber incidents detection timeline including parent company and subsidiaries
Telefónica Company Subsidiaries
Telefónica is today one of the largest telecommunications companies in the world in terms of market capitalisation and number of customers. We have the best infrastructure, as well as an innovative range of digital and data services; therefore, we are favorably positioned to meet the needs of our customers and capture growth in new businesses. We are sensitive to the new challenges demanded by society today and, therefore, we provide the means to facilitate communication between people, providing them with the most secure and cutting-edge technology. Our vision is focused on technology making people's lives easier and our aim is to promote progress in that direction, so that technology can make a positive impact on the world both socially and environmentally, and, ultimately, so as to provide value and trust in an ever-changing and accelerating world. Digital life is life itself, and technology is an essential part of being human. We want to create, protect and boost connections in life so people can choose a world of unlimited possibilities. We want to be a company in which our clients, employees, suppliers, shareholders, and society in general can trust. In order to achieve this, we communicate our strategy, business model and most relevant data to our stakeholders in a clear and transparent manner, so as to show the company's ability to create value.
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Telefónica CyberSecurity News
October 15, 2025 07:00 AM
Telefonica Spain, Incibe ink cybersecurity training deal
Telefonica Spain and the country's national institute for cybersecurity (Incibe) have signed an agreement to carry out joint activities to...
October 10, 2025 10:08 AM
Telefónica offloads Peruvian unit for $1.02m
Telefónica has agreed to sell its Peruvian arm, which recently filed for bankruptcy, to Argentina's Integra Tec International for around $1.02 million...
October 06, 2025 07:00 AM
Telefonica awarded Spanish govt cybersecurity contract following appeal - report
The government decided to suspend the award process after Telefonica challenged the scoring system used to evaluate the bids. According to...
October 06, 2025 07:00 AM
Digital transformation and cybersecurity: an inseparable relationship
Cybersecurity is one of the factors responsible for ensuring that digital transformation processes are carried out properly and with...
September 09, 2025 07:00 AM
Telefónica cuts the ribbon on Granada AI, cybersecurity hub
Telefónica cuts the ribbon on Granada AI, cybersecurity hub ... Telefónica has opened another Talent and Technology Center, through which it aims...
August 24, 2025 07:00 AM
Spanish govt suspends MasOrange cybersecurity contract following Telefonica appeal
According to business daily Expansion, the government decided to suspend the award process for the EUR 104 million five-year contract after...
August 14, 2025 07:00 AM
Resilient Digitalization: Building a Cybersecure Future
Find out more about Resilient Digitalization: Building a Cybersecure Future, don't miss it. Read now in our blog.
August 07, 2025 07:00 AM
Telefónica’s ex-digital chief Alonso joins cybersecurity player Cloudflare
Telefónica's ex-digital chief Alonso joins cybersecurity player Cloudflare ... Chema Alonso, Telefónica's former Chief Digital Officer, has joined...
July 30, 2025 07:00 AM
Telefonica scales back Huawei use in Europe, maintains course in Latin America
Telefonica, the Spanish telecom giant, is taking dramatic steps to reduce its reliance on Chinese technology giant Huawei in its European...
Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
Telefónica CyberSecurity History Information
Official Website of Telefónica
The official website of Telefónica is http://www.telefonica.com.
Telefónica’s AI-Generated Cybersecurity Score
According to Rankiteo, Telefónica’s AI-generated cybersecurity score is 697, reflecting their Weak security posture.
How many security badges does Telefónica’ have ?
According to Rankiteo, Telefónica currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
Does Telefónica have SOC 2 Type 1 certification ?
According to Rankiteo, Telefónica is not certified under SOC 2 Type 1.
Does Telefónica have SOC 2 Type 2 certification ?
According to Rankiteo, Telefónica does not hold a SOC 2 Type 2 certification.
Does Telefónica comply with GDPR ?
According to Rankiteo, Telefónica is not listed as GDPR compliant.
Does Telefónica have PCI DSS certification ?
According to Rankiteo, Telefónica does not currently maintain PCI DSS compliance.
Does Telefónica comply with HIPAA ?
According to Rankiteo, Telefónica is not compliant with HIPAA regulations.
Does Telefónica have ISO 27001 certification ?
According to Rankiteo,Telefónica is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Industry Classification of Telefónica
Telefónica operates primarily in the Telecommunications industry.
Number of Employees at Telefónica
Telefónica employs approximately 106,358 people worldwide.
Subsidiaries Owned by Telefónica
Telefónica presently has no subsidiaries across any sectors.
Telefónica’s LinkedIn Followers
Telefónica’s official LinkedIn profile has approximately 1,274,432 followers.
NAICS Classification of Telefónica
Telefónica is classified under the NAICS code 517, which corresponds to Telecommunications.
Telefónica’s Presence on Crunchbase
No, Telefónica does not have a profile on Crunchbase.
Telefónica’s Presence on LinkedIn
Yes, Telefónica maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/telefonica.
Cybersecurity Incidents Involving Telefónica
As of November 27, 2025, Rankiteo reports that Telefónica has experienced 1 cybersecurity incidents.
Number of Peer and Competitor Companies
Telefónica has an estimated 9,535 peer or competitor companies worldwide.
What types of cybersecurity incidents have occurred at Telefónica ?
Incident Types: The types of cybersecurity incidents that have occurred include Ransomware.
What was the total financial impact of these incidents on Telefónica ?
Total Financial Loss: The total financial loss from these incidents is estimated to be $0.
How does Telefónica detect and respond to cybersecurity incidents ?
Detection and Response: The company detects and responds to cybersecurity incidents through an incident response plan activated with null, and third party assistance with null, and law enforcement notified with null, and containment measures with null, and remediation measures with null, and recovery measures with null, and communication strategy with null, and adaptive behavioral waf with null, and on demand scrubbing services with null, and network segmentation with null, and enhanced monitoring with null..
Incident Details
Can you provide details on each incident ?
Title: Telefónica Data Breach Incident
Description: A threat actor claims to have stolen 106GB of sensitive files from Telefónica. The company asserts the files were old and stolen from a previous incident. A sample was shared with the media, with the full batch soon to follow.
Date Detected: null
Date Publicly Disclosed: null
Date Resolved: null
Type: Data Breach
Attack Vector: Internal Jira development and ticketing server
Vulnerability Exploited: null
Threat Actor: Hellcat ransomware operation, alias Rey
Motivation: Ransom
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 Ransomware.
How does the company identify the attack vectors used in incidents ?
Identification of Attack Vectors: The company identifies the attack vectors used in incidents through Internal Jira development and ticketing server.
Impact of the Incidents
What was the impact of each incident ?
Incident : Data Breach TEL732070725
Financial Loss: null
Data Compromised: 106GB of sensitive files, including internal communications, purchase orders, logs, customer records, and employee data
Systems Affected: Internal Jira development and ticketing server
Downtime: null
Operational Impact: null
Conversion Rate Impact: null
Revenue Loss: null
Customer Complaints: null
Brand Reputation Impact: null
Legal Liabilities: null
Identity Theft Risk: null
Payment Information Risk: null
What is the average financial loss per incident ?
Average Financial Loss: The average financial loss per incident is $0.00.
What types of data are most commonly compromised in incidents ?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Internal communications, purchase orders, logs, customer records and and employee data.
Which entities were affected by each incident ?
Incident : Data Breach TEL732070725
Entity Name: Telefónica
Entity Type: Telecommunications Company
Industry: Telecommunications
Location: Spain
Size: null
Customers Affected: null
Response to the Incidents
What measures were taken in response to each incident ?
Incident : Data Breach TEL732070725
Incident Response Plan Activated: null
Third Party Assistance: null
Law Enforcement Notified: null
Containment Measures: null
Remediation Measures: null
Recovery Measures: null
Communication Strategy: null
Adaptive Behavioral WAF: null
On-Demand Scrubbing Services: null
Network Segmentation: null
Enhanced Monitoring: null
What is the company's incident response plan?
Incident Response Plan: The company's incident response plan is described as null.
How does the company involve third-party assistance in incident response ?
Third-Party Assistance: The company involves third-party assistance in incident response through null.
Data Breach Information
What type of data was compromised in each breach ?
Incident : Data Breach TEL732070725
Type of Data Compromised: Internal communications, purchase orders, logs, customer records, and employee data
Number of Records Exposed: 380,000 files
Sensitivity of Data: Sensitive
Data Exfiltration: 106GB
Data Encryption: null
File Types Exposed: Invoices, email addresses, internal communications, purchase orders, logs, customer records, and employee data
Personally Identifiable Information: Email addresses, invoices for business partners or customers
What measures does the company take to prevent data exfiltration ?
Prevention of Data Exfiltration: The company takes the following measures to prevent data exfiltration: null.
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 null.
Ransomware Information
Was ransomware involved in any of the incidents ?
Incident : Data Breach TEL732070725
Ransom Demanded: null
Ransom Paid: null
Ransomware Strain: Hellcat
Data Encryption: null
Data Exfiltration: 106GB
How does the company recover data encrypted by ransomware ?
Data Recovery from Ransomware: The company recovers data encrypted by ransomware through null.
Regulatory Compliance
Were there any regulatory violations and fines imposed for each incident ?
Incident : Data Breach TEL732070725
Regulations Violated: null
Fines Imposed: null
Legal Actions: null
Regulatory Notifications: null
How does the company ensure compliance with regulatory requirements ?
Ensuring Regulatory Compliance: The company ensures compliance with regulatory requirements through null.
Lessons Learned and Recommendations
What lessons were learned from each incident ?
Incident : Data Breach TEL732070725
Lessons Learned: null
What recommendations were made to prevent future incidents ?
Incident : Data Breach TEL732070725
Recommendations: null
What are the key lessons learned from past incidents ?
Key Lessons Learned: The key lessons learned from past incidents are null.
What recommendations has the company implemented to improve cybersecurity ?
Implemented Recommendations: The company has implemented the following recommendations to improve cybersecurity: null.
References
Where can I find more information about each incident ?
Where can stakeholders find additional resources on cybersecurity best practices ?
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: BleepingComputerUrl: nullDate Accessed: null.
Investigation Status
What is the current status of the investigation for each incident ?
Incident : Data Breach TEL732070725
Investigation Status: null
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 null.
Stakeholder and Customer Advisories
Were there any advisories issued to stakeholders or customers for each incident ?
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: were null and null.
Initial Access Broker
How did the initial access broker gain entry for each incident ?
Incident : Data Breach TEL732070725
Entry Point: Internal Jira development and ticketing server
Reconnaissance Period: null
Backdoors Established: null
High Value Targets: null
Data Sold on Dark Web: null
Post-Incident Analysis
What were the root causes and corrective actions taken for each incident ?
What is the company's process for conducting post-incident analysis ?
Post-Incident Analysis Process: The company's process for conducting post-incident analysis is described as null, null.
What corrective actions has the company taken based on post-incident analysis ?
Corrective Actions Taken: The company has taken the following corrective actions based on post-incident analysis: null.
Additional Questions
General Information
Has the company ever paid ransoms ?
Ransom Payment History: The company has Paid ransoms in the past.
What was the amount of the last ransom demanded ?
Last Ransom Demanded: The amount of the last ransom demanded was null.
Who was the attacking group in the last incident ?
Last Attacking Group: The attacking group in the last incident were an Hellcat ransomware operation and alias Rey.
Incident Details
What was the most recent incident detected ?
Most Recent Incident Detected: The most recent incident detected was on null.
What was the most recent incident publicly disclosed ?
Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on null.
What was the most recent incident resolved ?
Most Recent Incident Resolved: The most recent incident resolved was on null.
Impact of the Incidents
What was the highest financial loss from an incident ?
Highest Financial Loss: The highest financial loss from an incident was null.
What was the most significant data compromised in an incident ?
Most Significant Data Compromised: The most significant data compromised in an incident were 106GB of sensitive files, including internal communications, purchase orders, logs, customer records and and employee data.
Response to the Incidents
What third-party assistance was involved in the most recent incident ?
Third-Party Assistance in Most Recent Incident: The third-party assistance involved in the most recent incident was null.
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 null.
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 106GB of sensitive files, including internal communications, purchase orders, logs, customer records and and employee data.
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 380.0K.
Ransomware Information
What was the highest ransom demanded in a ransomware incident ?
Highest Ransom Demanded: The highest ransom demanded in a ransomware incident was null.
What was the highest ransom paid in a ransomware incident ?
Highest Ransom Paid: The highest ransom paid in a ransomware incident was null.
Regulatory Compliance
What was the highest fine imposed for a regulatory violation ?
Highest Fine Imposed: The highest fine imposed for a regulatory violation was null.
What was the most significant legal action taken for a regulatory violation ?
Most Significant Legal Action: The most significant legal action taken for a regulatory violation was null.
Lessons Learned and Recommendations
What was the most significant lesson learned from past incidents ?
Most Significant Lesson Learned: The most significant lesson learned from past incidents was null.
What was the most significant recommendation implemented to improve cybersecurity ?
Most Significant Recommendation Implemented: The most significant recommendation implemented to improve cybersecurity was null.
References
What is the most recent source of information about an incident ?
Most Recent Source: The most recent source of information about an incident is BleepingComputer.
What is the most recent URL for additional resources on cybersecurity best practices ?
Most Recent URL for Additional Resources: The most recent URL for additional resources on cybersecurity best practices is null .
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 null.
Stakeholder and Customer Advisories
What was the most recent stakeholder advisory issued ?
Most Recent Stakeholder Advisory: The most recent stakeholder advisory issued was null, .
What was the most recent customer advisory issued ?
Most Recent Customer Advisory: The most recent customer advisory issued was an null.
Initial Access Broker
What was the most recent entry point used by an initial access broker ?
Most Recent Entry Point: The most recent entry point used by an initial access broker was an Internal Jira development and ticketing server.
What was the most recent reconnaissance period for an incident ?
Most Recent Reconnaissance Period: The most recent reconnaissance period for an incident was null.
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Latest Global CVEs (Not Company-Specific)
Description
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to versions 19.2.16, 20.3.14, and 21.0.1, there is a XSRF token leakage via protocol-relative URLs in angular HTTP clients. The vulnerability is a Credential Leak by App Logic that leads to the unauthorized disclosure of the Cross-Site Request Forgery (XSRF) token to an attacker-controlled domain. Angular's HttpClient has a built-in XSRF protection mechanism that works by checking if a request URL starts with a protocol (http:// or https://) to determine if it is cross-origin. If the URL starts with protocol-relative URL (//), it is incorrectly treated as a same-origin request, and the XSRF token is automatically added to the X-XSRF-TOKEN header. This issue has been patched in versions 19.2.16, 20.3.14, and 21.0.1. A workaround for this issue involves avoiding using protocol-relative URLs (URLs starting with //) in HttpClient requests. All backend communication URLs should be hardcoded as relative paths (starting with a single /) or fully qualified, trusted absolute URLs.
Risk Information
cvss4
Base: 7.7
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/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
References
- https://github.com/angular/angular/commit/0276479e7d0e280e0f8d26fa567d3b7aa97a516f
- https://github.com/angular/angular/commit/05fe6686a97fa0bcd3cf157805b3612033f975bc
- https://github.com/angular/angular/commit/3240d856d942727372a705252f7c8c115394a41e
- https://github.com/angular/angular/releases/tag/19.2.16
- https://github.com/angular/angular/releases/tag/20.3.14
- https://github.com/angular/angular/releases/tag/21.0.1
- https://github.com/angular/angular/security/advisories/GHSA-58c5-g7wp-6w37
Description
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. An Uncontrolled Recursion vulnerability in node-forge versions 1.3.1 and below enables remote, unauthenticated attackers to craft deep ASN.1 structures that trigger unbounded recursive parsing. This leads to a Denial-of-Service (DoS) via stack exhaustion when parsing untrusted DER inputs. This issue has been patched in version 1.3.2.
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
Forge (also called `node-forge`) is a native implementation of Transport Layer Security in JavaScript. An Integer Overflow vulnerability in node-forge versions 1.3.1 and below enables remote, unauthenticated attackers to craft ASN.1 structures containing OIDs with oversized arcs. These arcs may be decoded as smaller, trusted OIDs due to 32-bit bitwise truncation, enabling the bypass of downstream OID-based security decisions. This issue has been patched in version 1.3.2.
Risk Information
cvss4
Base: 6.3
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/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
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. Prior to versions 7.0.13 and 8.0.2, working with large buffers in Lua scripts can lead to a stack overflow. Users of Lua rules and output scripts may be affected when working with large buffers. This includes a rule passing a large buffer to a Lua script. This issue has been patched in versions 7.0.13 and 8.0.2. A workaround for this issue involves disabling Lua rules and output scripts, or making sure limits, such as stream.depth.reassembly and HTTP response body limits (response-body-limit), are set to less than half the stack size.
Risk Information
cvss3
Base: 7.5
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
Suricata is a network IDS, IPS and NSM engine developed by the OISF (Open Information Security Foundation) and the Suricata community. In versions from 8.0.0 to before 8.0.2, a NULL dereference can occur when the entropy keyword is used in conjunction with base64_data. This issue has been patched in version 8.0.2. A workaround involves disabling rules that use entropy in conjunction with base64_data.
Risk Information
cvss3
Base: 7.5
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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Incident
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Digital Assets
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:
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.
Rankiteo is a unified scoring and risk platform that analyzes billions of signals weekly to help organizations gain faster, more actionable insights into emerging threats. Empowering teams to outpace adversaries and reduce exposure.
