Company Details
a1hrvatska
1,274
27,187
517
a1.hr
0
A1 _1058687
In-progress

A1 Hrvatska d.o.o. Company CyberSecurity Posture
a1.hrAt A1 Croatia we take care that among the thousands existing options we can help you to find the best smart solutions that will simplify the complicated, save time and enjoy more. We do our best to improve digital customer experience with constant innovations and solutions. We are proud to say that our 2.000 employees take care of the needs of 2 million customers on everyday basis. WE ARE PART OF A1 TELEKOM AUSTRIA GROUP A1 Hrvatska is a part of A1 Telekom Austria Group, leading provider of digital services and communications solutions in Central and Eastern Europe. Together we are offering a state-of-the art network infrastructure and strive to empower digital life of more than 24 million users in areas of communications, payment, entertainment services and integrated business solutions. In Europe, the Group operates also in Austria, Bulgaria, Croatia, Slovenia, Belarus, Republic of Serbia and Republic of Macedonia. Headquartered in Vienna, the Group is an European unit of América Móvil, one of the world´s largest wireless services providers. You can find more info about A1 Telekom Austria Group here: https://www.linkedin.com/company/a1-telekom-austria-group/
Company Details
a1hrvatska
1,274
27,187
517
a1.hr
0
A1 _1058687
In-progress
Between 700 and 749

AHD Global Score (TPRM)XXXX

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.
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.


No incidents recorded for A1 Hrvatska d.o.o. in 2025.
No incidents recorded for A1 Hrvatska d.o.o. in 2025.
No incidents recorded for A1 Hrvatska d.o.o. in 2025.
AHD cyber incidents detection timeline including parent company and subsidiaries

At A1 Croatia we take care that among the thousands existing options we can help you to find the best smart solutions that will simplify the complicated, save time and enjoy more. We do our best to improve digital customer experience with constant innovations and solutions. We are proud to say that our 2.000 employees take care of the needs of 2 million customers on everyday basis. WE ARE PART OF A1 TELEKOM AUSTRIA GROUP A1 Hrvatska is a part of A1 Telekom Austria Group, leading provider of digital services and communications solutions in Central and Eastern Europe. Together we are offering a state-of-the art network infrastructure and strive to empower digital life of more than 24 million users in areas of communications, payment, entertainment services and integrated business solutions. In Europe, the Group operates also in Austria, Bulgaria, Croatia, Slovenia, Belarus, Republic of Serbia and Republic of Macedonia. Headquartered in Vienna, the Group is an European unit of América Móvil, one of the world´s largest wireless services providers. You can find more info about A1 Telekom Austria Group here: https://www.linkedin.com/company/a1-telekom-austria-group/


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A1 Croatia, part of A1 Telekom Austria Group, said it has appointed Dejan Turk as its new CEO, after Jiri Dvorjancansky stepped down after more than 10 years...

Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
The official website of A1 Hrvatska d.o.o. is http://www.A1.hr.
According to Rankiteo, A1 Hrvatska d.o.o.’s AI-generated cybersecurity score is 723, reflecting their Moderate security posture.
According to Rankiteo, A1 Hrvatska d.o.o. currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
According to Rankiteo, A1 Hrvatska d.o.o. is not certified under SOC 2 Type 1.
According to Rankiteo, A1 Hrvatska d.o.o. does not hold a SOC 2 Type 2 certification.
According to Rankiteo, A1 Hrvatska d.o.o. is not listed as GDPR compliant.
According to Rankiteo, A1 Hrvatska d.o.o. does not currently maintain PCI DSS compliance.
According to Rankiteo, A1 Hrvatska d.o.o. is not compliant with HIPAA regulations.
According to Rankiteo,A1 Hrvatska d.o.o. is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
A1 Hrvatska d.o.o. operates primarily in the Telecommunications industry.
A1 Hrvatska d.o.o. employs approximately 1,274 people worldwide.
A1 Hrvatska d.o.o. presently has no subsidiaries across any sectors.
A1 Hrvatska d.o.o.’s official LinkedIn profile has approximately 27,187 followers.
A1 Hrvatska d.o.o. is classified under the NAICS code 517, which corresponds to Telecommunications.
No, A1 Hrvatska d.o.o. does not have a profile on Crunchbase.
Yes, A1 Hrvatska d.o.o. maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/a1hrvatska.
As of November 27, 2025, Rankiteo reports that A1 Hrvatska d.o.o. has experienced 2 cybersecurity incidents.
A1 Hrvatska d.o.o. has an estimated 9,533 peer or competitor companies worldwide.
Incident Types: The types of cybersecurity incidents that have occurred include Breach.
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..
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
Common Attack Types: The most common types of attacks the company has faced is Breach.

Data Compromised: Names, Personal identification numbers, Physical addresses, Telephone numbers
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Personal Information and .

Entity Name: A1 Hrvatska
Entity Type: Telecommunications Company
Industry: Telecommunications
Location: Croatia
Customers Affected: 200000

Entity Name: A1 Telekom
Entity Type: Internet Service Provider
Industry: Telecommunications
Location: Austria

Third Party Assistance: Computer Forensics Team.
Communication Strategy: Notified impacted customers
Third-Party Assistance: The company involves third-party assistance in incident response through Computer Forensics Team, .

Type of Data Compromised: Personal information
Number of Records Exposed: 200000
Personally Identifiable Information: NamesPersonal Identification NumbersPhysical AddressesTelephone Numbers
Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through Notified Impacted Customers.
Post-Incident Analysis Process: The company's process for conducting post-incident analysis is described as Computer Forensics Team, .
Most Recent Incident Detected: The most recent incident detected was on December 2019.
Most Significant Data Compromised: The most significant data compromised in an incident were Names, Personal Identification Numbers, Physical Addresses, Telephone Numbers and .
Third-Party Assistance in Most Recent Incident: The third-party assistance involved in the most recent incident was computer forensics team, .
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were Personal Identification Numbers, Physical Addresses, Telephone Numbers and Names.
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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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.
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.
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.
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.
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.

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