ATAG
Company Details
Linkedin ID:
a1-telekom-austria-group
Website:
Employees number:
12,126
Number of followers:
21,757
NAICS:
517
Industry Type:
Homepage:
a1.group
IP Addresses:
0
Company ID:
A1 _3335394
Scan Status:
In-progress
Internal validation & live display
Multiple badges & continuous verification
Faster underwriting decisions
A1 Telekom Austria Group Vendor Cyber Rating & Cyber Score
a1.groupWE ARE EMPOWERING DIGITAL LIFE We don't know what 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 also follow us here: https://twitter.com/TA_Group Find out more about us as an 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
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ATAG Global Score (TPRM)XXXX
ATAG
- Instant access to detailed risk factors
- Benchmark vs. industry & size peers
- Vulnerabilities
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ATAG Company CyberSecurity News & History
Past Incidents
2
Attack Types
1
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.
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.
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 2026.
Incidents vs All-Companies Average (This Year)
No incidents recorded for A1 Telekom Austria Group in 2026.
Incident Types ATAG vs Telecommunications Industry Avg (This Year)
No incidents recorded for A1 Telekom Austria Group in 2026.
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 what 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 also follow us here: https://twitter.com/TA_Group Find out more about us as an employer on https://jobs.a1.com/
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ATAG CyberSecurity News
February 24, 2026 08:00 AM
Telekom Austria : Erste Group sets new standards in quantum encryption together with A1 and zerothird
Erste Group is the first European banking group to pilot the commercial use of entanglement-based quantum encryption for critical financial...
July 14, 2025 07:00 AM
Austria Data Center Market Investment Analysis & Growth
The Austria data center market is projected to surge at a 15.18% CAGR from 2024 to 2030. Key drivers include government initiatives like the...
May 02, 2025 07:00 AM
A1's Data Centres: Powering Digital Transformation
Bojan Klasan, Head of Data Center at A1 Croatia explores how A1 is revolutionising the country's digital landscape with its state-of-the-art data centres.
March 05, 2025 08:00 AM
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stc Kuwait Integrates IPification Authentication Solution for Digital Services
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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 762, 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.
Has A1 Telekom Austria Group been affected by any supply chain cyber incidents ?
According to Rankiteo, A1 Telekom Austria Group has not been affected by any supply chain cyber incidents, and no incident IDs are currently listed 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 12,126 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 21,757 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 April 02, 2026, 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 10,042 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 Names, Physical Addresses, Telephone Numbers and Personal Identification Numbers.
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
A security flaw has been discovered in itsourcecode Payroll Management System 1.0. Affected by this vulnerability is an unknown functionality of the file /manage_user.php of the component Parameter Handler. Performing a manipulation of the argument ID results in sql injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.
Risk Information
cvss2
Base: 7.5
Severity: LOW
AV:N/AC:L/Au:N/C:P/I:P/A:P
cvss3
Base: 7.3
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
cvss4
Base: 6.9
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
A vulnerability was identified in Axiomatic Bento4 up to 1.6.0-641. Affected is the function AP4_BitReader::SkipBits of the file Ap4Dac4Atom.cpp of the component DSI v1 Parser. Such manipulation of the argument n_presentations leads to heap-based buffer overflow. The attack needs to be performed locally. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.
Risk Information
cvss2
Base: 4.3
Severity: LOW
AV:L/AC:L/Au:S/C:P/I:P/A:P
cvss3
Base: 5.3
Severity: LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
cvss4
Base: 4.8
Severity: LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
A vulnerability was determined in Axiomatic Bento4 up to 1.6.0-641. This impacts the function AP4_BitReader::ReadCache of the file Ap4Dac4Atom.cpp of the component MP4 File Parser. This manipulation causes heap-based buffer overflow. The attack needs to be launched locally. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.
Risk Information
cvss2
Base: 4.3
Severity: LOW
AV:L/AC:L/Au:S/C:P/I:P/A:P
cvss3
Base: 5.3
Severity: LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
cvss4
Base: 4.8
Severity: LOW
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, there is a heap-buffer-overflow (HBO) in icAnsiToUtf8() in the XML conversion path. The issue is triggered by a crafted ICC profile which causes icAnsiToUtf8(std::string&, char const*) to treat an input buffer as a C-string and call operations that rely on strlen()/null-termination. AddressSanitizer reports an out-of-bounds READ of size 115 past a 114-byte heap allocation, with the failure observed while running the iccToXml tool. This issue has been patched in version 2.3.1.6.
Risk Information
cvss3
Base: 6.2
Severity: LOW
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, there is a stack-buffer-overflow (SBO) in CIccTagFixedNum<>::GetValues() and a related bug chain. The primary crash is an AddressSanitizer-reported WRITE of size 4 that overflows a 4-byte stack variable (rv) via the call chain CIccTagFixedNum::GetValues() -> CIccTagStruct::GetElemNumberValue(). This issue has been patched in version 2.3.1.6.
Risk Information
cvss3
Base: 6.2
Severity: LOW
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/InternationalColorConsortium/iccDEV/issues/696
- https://github.com/InternationalColorConsortium/iccDEV/issues/697
- https://github.com/InternationalColorConsortium/iccDEV/issues/698
- https://github.com/InternationalColorConsortium/iccDEV/issues/703
- https://github.com/InternationalColorConsortium/iccDEV/pull/739
- https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-983c-rgh5-4982
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RapidWhat Do We Measure ?
Incident
Finding
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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.
