ATAG
Company Details
Linkedin ID:
a1-telekom-austria-group
Website:
Employees number:
11,462
Number of followers:
19,989
NAICS:
517
Industry Type:
Homepage:
a1.group
IP Addresses:
0
Company ID:
A1 _3335394
Scan Status:
In-progress
A1 Telekom Austria Group Company CyberSecurity Posture
a1.group
WE ARE EMPOWERING DIGITAL LIFE We don't know how the world will look like in 2050, but we know that A1 Telekom Austria Group is geared up for current and future demands. We are a leading provider of digital services and communications solutions in Central and Eastern Europe, offering a state-of-the art network infrastructure as well as empowering digitalization. 19.000 of our employees and modern broadband infrastructure make digital business and lifestyle possible as well as enable more than 24 mio users to connect everywhere anytime. Our purpose is to Empower Digital Life in areas of communications, payment, entertainment services and integrated business solutions. We do this together with our operating companies in 7 European countries: Austria, Bulgaria, Croatia, Slovenia, Belarus, Republic of Serbia and Republic of North Macedonia. Headquartered in Vienna and listed on the Vienna Stock Exchange, the A1 Telekom Austria Group is an European unit of América Móvil, one of the world´s largest wireless services providers. You can follow us also here: https://twitter.com/TA_Group Find out more about us as employer on https://jobs.a1.com/
A1 Telekom Austria Group A.I CyberSecurity Scoring
ATAG Risk Score (AI oriented)Between 750 and 799
ATAG
Updated:
- Powered by our proprietary A.I cyber incident model
- Insurance preferes TPRM score to calculate premium
ATAG Global Score (TPRM)XXXX
ATAG
- Instant access to detailed risk factors
- Benchmark vs. industry & size peers
- Vulnerabilities
- Findings
ATAG Company CyberSecurity News & History
Past Incidents
2
Attack Types
1
A1 Telekom Austria Group
Breach
Rankiteo Explanation
Attack with significant impact with internal employee data leaks
Description: A1 Telekom, the largest internet service provider in Austria, experienced a security breach amid a malware infection. The company suffered a malware infection in November 2019 but its security team detected the malware a month later, and removing the infection was more problematic than it initially anticipated.
A1 Hrvatska d.o.o.
Breach
Rankiteo Explanation
Attack with significant impact with customers data leaks
Description: Croatian phone carrier A1 Hrvatska suffered a data breach incident that impacted thousands of its customers. The breach compromised the personal information of about 200,000 customers, including names, personal identification numbers, physical addresses, and telephone numbers. The company investigated the incident with a computer forensics team and notified law enforcement and impacted customers.
ATAG 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 ATAG
Incidents vs Telecommunications Industry Average (This Year)
No incidents recorded for A1 Telekom Austria Group in 2025.
Incidents vs All-Companies Average (This Year)
No incidents recorded for A1 Telekom Austria Group in 2025.
Incident Types ATAG vs Telecommunications Industry Avg (This Year)
No incidents recorded for A1 Telekom Austria Group in 2025.
Incident History — ATAG (X = Date, Y = Severity)
ATAG cyber incidents detection timeline including parent company and subsidiaries
ATAG Company Subsidiaries
WE ARE EMPOWERING DIGITAL LIFE We don't know how the world will look like in 2050, but we know that A1 Telekom Austria Group is geared up for current and future demands. We are a leading provider of digital services and communications solutions in Central and Eastern Europe, offering a state-of-the art network infrastructure as well as empowering digitalization. 19.000 of our employees and modern broadband infrastructure make digital business and lifestyle possible as well as enable more than 24 mio users to connect everywhere anytime. Our purpose is to Empower Digital Life in areas of communications, payment, entertainment services and integrated business solutions. We do this together with our operating companies in 7 European countries: Austria, Bulgaria, Croatia, Slovenia, Belarus, Republic of Serbia and Republic of North Macedonia. Headquartered in Vienna and listed on the Vienna Stock Exchange, the A1 Telekom Austria Group is an European unit of América Móvil, one of the world´s largest wireless services providers. You can follow us also here: https://twitter.com/TA_Group Find out more about us as employer on https://jobs.a1.com/
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ATAG CyberSecurity News
July 22, 2025 07:00 AM
Austria Data Center Market Investment Analysis & Growth Opportunities 2025-2030: Microsoft to Launch Azure Cloud Region in Austria, Powered by 100% Clean Energy - ResearchAndMarkets.com
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May 02, 2025 07:00 AM
A1's Data Centres: Powering Digital Transformation
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March 05, 2025 02:47 AM
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February 11, 2025 08:00 AM
Solid financial year 2024 for A1 Group: 3.1% total revenue growth, 5.1% EBITDA growth
We delivered robust operational and financial results in 2024. Group revenues rose by 3.1% to EUR 5.41 billion driven by service revenue growth.
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ENISA Telecom and Digital Infrastructure Security Forum 2025
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Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
ATAG CyberSecurity History Information
Official Website of A1 Telekom Austria Group
The official website of A1 Telekom Austria Group is https://www.a1.group/.
A1 Telekom Austria Group’s AI-Generated Cybersecurity Score
According to Rankiteo, A1 Telekom Austria Group’s AI-generated cybersecurity score is 761, reflecting their Fair security posture.
How many security badges does A1 Telekom Austria Group’ have ?
According to Rankiteo, A1 Telekom Austria Group currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
Does A1 Telekom Austria Group have SOC 2 Type 1 certification ?
According to Rankiteo, A1 Telekom Austria Group is not certified under SOC 2 Type 1.
Does A1 Telekom Austria Group have SOC 2 Type 2 certification ?
According to Rankiteo, A1 Telekom Austria Group does not hold a SOC 2 Type 2 certification.
Does A1 Telekom Austria Group comply with GDPR ?
According to Rankiteo, A1 Telekom Austria Group is not listed as GDPR compliant.
Does A1 Telekom Austria Group have PCI DSS certification ?
According to Rankiteo, A1 Telekom Austria Group does not currently maintain PCI DSS compliance.
Does A1 Telekom Austria Group comply with HIPAA ?
According to Rankiteo, A1 Telekom Austria Group is not compliant with HIPAA regulations.
Does A1 Telekom Austria Group have ISO 27001 certification ?
According to Rankiteo,A1 Telekom Austria Group is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Industry Classification of A1 Telekom Austria Group
A1 Telekom Austria Group operates primarily in the Telecommunications industry.
Number of Employees at A1 Telekom Austria Group
A1 Telekom Austria Group employs approximately 11,462 people worldwide.
Subsidiaries Owned by A1 Telekom Austria Group
A1 Telekom Austria Group presently has no subsidiaries across any sectors.
A1 Telekom Austria Group’s LinkedIn Followers
A1 Telekom Austria Group’s official LinkedIn profile has approximately 19,989 followers.
NAICS Classification of A1 Telekom Austria Group
A1 Telekom Austria Group is classified under the NAICS code 517, which corresponds to Telecommunications.
A1 Telekom Austria Group’s Presence on Crunchbase
No, A1 Telekom Austria Group does not have a profile on Crunchbase.
A1 Telekom Austria Group’s Presence on LinkedIn
Yes, A1 Telekom Austria Group maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/a1-telekom-austria-group.
Cybersecurity Incidents Involving A1 Telekom Austria Group
As of November 27, 2025, Rankiteo reports that A1 Telekom Austria Group has experienced 2 cybersecurity incidents.
Number of Peer and Competitor Companies
A1 Telekom Austria Group has an estimated 9,535 peer or competitor companies worldwide.
What types of cybersecurity incidents have occurred at A1 Telekom Austria Group ?
Incident Types: The types of cybersecurity incidents that have occurred include Breach.
How does A1 Telekom Austria Group detect and respond to cybersecurity incidents ?
Detection and Response: The company detects and responds to cybersecurity incidents through an third party assistance with computer forensics team, and and communication strategy with notified impacted customers..
Incident Details
Can you provide details on each incident ?
Title: Data Breach at A1 Hrvatska
Description: Croatian phone carrier A1 Hrvatska suffered a data breach incident that impacted thousands of its customers. The breach compromised the personal information of about 200,000 customers, including names, personal identification numbers, physical addresses, and telephone numbers. The company investigated the incident with a computer forensics team and notified law enforcement and impacted customers.
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 A1H13175522
Data Compromised: Names, Personal identification numbers, Physical addresses, Telephone numbers
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 .
Which entities were affected by each incident ?
Incident : Data Breach A1H13175522
Entity Name: A1 Hrvatska
Entity Type: Telecommunications Company
Industry: Telecommunications
Location: Croatia
Customers Affected: 200000
Incident : Malware Infection A1T2156311222
Entity Name: A1 Telekom
Entity Type: Internet Service Provider
Industry: Telecommunications
Location: Austria
Response to the Incidents
What measures were taken in response to each incident ?
Incident : Data Breach A1H13175522
Third Party Assistance: Computer Forensics Team.
Communication Strategy: Notified impacted customers
How does the company involve third-party assistance in incident response ?
Third-Party Assistance: The company involves third-party assistance in incident response through Computer Forensics Team, .
Data Breach Information
What type of data was compromised in each breach ?
Incident : Data Breach A1H13175522
Type of Data Compromised: Personal information
Number of Records Exposed: 200000
Personally Identifiable Information: NamesPersonal Identification NumbersPhysical AddressesTelephone Numbers
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 Notified Impacted Customers.
Post-Incident Analysis
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 Computer Forensics Team, .
Additional Questions
Incident Details
What was the most recent incident detected ?
Most Recent Incident Detected: The most recent incident detected was on December 2019.
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, Personal Identification Numbers, Physical Addresses, Telephone Numbers and .
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 computer forensics team, .
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 Telephone Numbers, Names, Personal Identification Numbers and Physical Addresses.
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 200.0.
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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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RapidWhat Do We Measure ?
Incident
Finding
Grade
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.
