What is the official website of A1 Bulgaria ?

The official website of A1 Bulgaria is http://a1.bg.

What is A1 Bulgaria's cybersecurity risk score?

A1 Bulgaria has an AI-generated cybersecurity risk score of 761 out of 1000, indicating a Fair security posture according to Rankiteo's assessment.

How many security incidents has A1 Bulgaria experienced?

According to Rankiteo, A1 Bulgaria currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.

Has A1 Bulgaria been affected by any supply chain cyber incidents ?

According to Rankiteo, A1 Bulgaria has not been affected by any supply chain cyber incidents, and no incident IDs are currently listed for the organization.

Does A1 Bulgaria have SOC 2 Type 1 certification ?

According to Rankiteo, A1 Bulgaria is not certified under SOC 2 Type 1.

Does A1 Bulgaria have SOC 2 Type 2 certification ?

According to Rankiteo, A1 Bulgaria does not hold a SOC 2 Type 2 certification.

Does A1 Bulgaria comply with GDPR ?

According to Rankiteo, A1 Bulgaria is not listed as GDPR compliant.

Does A1 Bulgaria have PCI DSS certification ?

According to Rankiteo, A1 Bulgaria does not currently maintain PCI DSS compliance.

Does A1 Bulgaria comply with HIPAA ?

According to Rankiteo, A1 Bulgaria is not compliant with HIPAA regulations.

Does A1 Bulgaria have ISO 27001 certification ?

According to Rankiteo,A1 Bulgaria is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.

Which industry does A1 Bulgaria operate in ?

A1 Bulgaria operates primarily in the Telecommunications industry.

How many employees does A1 Bulgaria have ?

A1 Bulgaria employs approximately 2,267 people worldwide.

Does A1 Bulgaria own any subsidiaries ?

A1 Bulgaria presently has no subsidiaries across any sectors.

How many LinkedIn followers does A1 Bulgaria have ?

A1 Bulgaria's official LinkedIn profile has approximately 28,359 followers.

What is the NAICS classification code for A1 Bulgaria ?

A1 Bulgaria is classified under the NAICS code 517, which corresponds to Telecommunications.

Does A1 Bulgaria have a Crunchbase profile ?

Yes, A1 Bulgaria has an official profile on Crunchbase, which can be accessed here: https://www.crunchbase.com/organization/a1-bg.

Does A1 Bulgaria have a LinkedIn profile ?

Yes, A1 Bulgaria maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/a1bulgaria.

How many cybersecurity incidents has A1 Bulgaria experienced ?

As of September 20, 2026, Rankiteo reports that A1 Bulgaria has experienced 2 cybersecurity incidents.

How many peer or competitor companies does A1 Bulgaria have ?

A1 Bulgaria has an estimated 10,349 peer or competitor companies worldwide.

What types of cybersecurity incidents has A1 Bulgaria faced ?

Incident Types: The types of cybersecurity incidents that have occurred include Breach.

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A1 Bulgaria

Boost Score +25 with badge (5 left)

761

/1000

Fair

786

/1000

Fair

A1 Bulgaria Vendor Cyber Rating & Cyber Score

a1.bg

cb in

Add Your Compliance Badge

А1 е водещ доставчик на дигитални услуги и телекомуникационни решения в България. Компанията предоставя мобилни и фиксирани услуги, високоскоростен интернет, интерактивна, цифрова и сателитна телевизия, 4 собствени спортни канала с марката MAX Sport, платежни услуги, ICT, cloud и IoT бизнес решения на над 4,8 млн. клиенти. Близо 3600 служителя и модерна телекомуникационна и ICT инфраструктура осигуряват достъп до дигитални, свързвайки хора, неща и локации. А1 разполага със собствена оптична мрежа от над 21 000 км и модерна инфраструктура, която покрива 73 града и 133 малки населени места. Нашата 5G мрежа обхваща над 210 града и курорта, а 4G мрежата ни покрива над 99% от населението на страна. А1 България е част от A1 Group – водещ

A1 Bulgaria

A1 Bulgaria CyberSecurity News & History

Past Incidents

Attack Types

Entity

Type

Severity

Impact

Seen

Blog Details

Supply Chain Source

Incident Details

View

A1 Bulgaria

Breach

02/2022

A1H13175522

A1 Bulgaria

Breach

11/2019

A1T2156311222

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A.I.

A1 Bulgaria Company Scoring based on AI Models

Cyber Incidents Likelihood 3 - 6 - 9 months

Actual

Prediction

Incident Predictions locked

Access Monitoring Plan

A.I Risk Score Likelihood 3 - 6 - 9 months

Actual

Prediction A

Prediction B

Prediction C

Prediction D

A.I. Risk Score Predictions locked

Access Monitoring Plan

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Underwriter Stats for A1 Bulgaria

Incidents vs Telecommunications Industry Avg (This Year)

No incidents recorded for A1 Bulgaria in 2026.

Incidents vs All-Companies Average (This Year)

No incidents recorded for A1 Bulgaria in 2026.

Incident Types A1 Bulgaria vs Telecommunications Industry Avg (This Year)

No incidents recorded for A1 Bulgaria in 2026.

Incident History - A1 Bulgaria (X = Date, Y = Severity)

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SUBSIDIARY

A1 Bulgaria Subsidiaries

A1 Bulgaria

Telecommunications

Website: http://a1.bg

Company Size: 2,267

A1 Telekom Austria GroupTelecommunications

A1 Srbija d.o.o.Telecommunications

A1 MakedonijaTelecommunications

Vip mobile d.o.o.Telecommunications

A1 BelarusTelecommunications

A1 DigitalIT Services and IT Consulting

OffensityIT-Dienstleistungen und IT-Beratung

A1 Slovenija d.d.Telecommunications

A1 Telekom Austria AGTelecommunications

A1 Hrvatska d.o.o.Telecommunications

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A1 Bulgaria Similar Companies

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televisa.com

Televisa es una gran corporación de telecomunicaciones que posee y opera una de las compañías de cable más relevantes y un sistema líder de televisión de paga vía satélite en México. El negocio de cable de Televisa ofrece servicios integrales que incluyen video, servicios de datos de alta velocidad y servicios de voz a clientes residenciales y comerciales, así ́como servicios administrados a empresas de telecomunicación locales e internacionales. Televisa posee una participación mayoritaria en Sky, un sistema líder de televisión de paga directa al hogar vía satélite y proveedor de banda ancha que opera en México, la República Dominicana y Centroamérica. Televisa es titular de una serie de concesiones del gobierno mexicano que le autorizan a transmitir programación a través de estaciones de televisión para las señales de TelevisaUnivision, Inc. (“TelevisaUnivision”), y los sistemas de cable y televisión satelital de Televisa. Además, Televisa es el mayor accionista de TelevisaUnivision, la compañía controladora de Univision Communications Inc., una empresa de medios líder en la producción, creación y distribución de contenido en español a través de varios canales de transmisión en México, Estados Unidos y a más de 70 países a través de operadores de cable, canales de televisión y servicios adicionales por internet (“OTT”, por sus siglas en inglés). Televisa también tiene intereses en la publicación y distribución de revistas, deportes profesionales y entretenimiento en vivo, y juegos.

Airtel Africa

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Airtel Africa is a leading provider of telecommunications and mobile money services, with a presence in 14 countries in Africa, primarily in East Africa and Central and West Africa. Airtel Africa offers an integrated suite of telecommunications solutions to its subscribers, including mobile voice and data services as well as mobile money services both nationally and internationally. The Group aims to continue providing a simple and intuitive customer experience through streamlined customer journeys

Idea Cellular Ltd

cb ideacellular.com

Idea Cellular is an Aditya Birla Group Company, India's first truly multinational corporation. Idea is a pan-India integrated GSM operator offering 2G and 3G services, and has its own NLD and ILD operations, and ISP license. With revenue in excess of $4 billion; revenue market share of 18%; and subscriber base of over 150 million, Idea is India’s 3rd largest mobile operator. Idea ranks among the Top 10 country operators in the world with a traffic of over 1.5 billion minutes a day. Idea’s robust pan-India coverage is built on a network of over 100,000 2G and 3G cell sites, spread across over 55,000 towns in India. Using the latest in technology, Idea provides world-class service delivery through the most extensive network of customer touch points, comprising of nearly 4,500 exclusive Idea outlets, and over 7,000 call centre seats. Idea’s customer service delivery platform is ISO 9001:2008 certified, making it the only operator in the country to have this standard certification for all 22 service areas and the corporate office Idea won the ‘Best Brand Campaign’ at the esteemed World Communication Awards 2011. It also recently won 3 Awards at the ET Telecom Awards 2012, in the following categories Customer Experience Enhancement, Excellence in Marketing and Innovative products, respectively.

A1 Telekom Austria Group

a1.group

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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Telia

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NEWS

A1 Bulgaria CyberSecurity News

Latest updates, reports, and threat intel affecting the global network.

June 02, 2025 02:17 PM

Everything You Need to Know About Internet Access in Bulgaria (Even the Satellites!)

Operators and Networks: Three main mobile network operators (MNOs) serve Bulgaria: A1 Bulgaria, Yettel (formerly Telenor Bulgaria), and Vivacom.

Read Article

April 22, 2025 07:00 AM

Vodafone, A1 Group and Ericsson establish world first 5G Standalone international roaming connection between two operator groups

5G SA connection made between Vodafone Germany and A1 Bulgaria paves the way for advanced roaming services for customers.

Read Article

September 08, 2023 01:02 AM

A1 Group trials Nokia’s 5G Standalone (SA) Cloud RAN solution on their commercial 5G network

The solution brings agility, flexibility, and openness for operators and enterprises to establish new business and revenue models by delivering innovative...

Read Article

October 21, 2022 07:00 AM

How Prepared is Bulgaria to Fight Cyber Attacks? Experts Weigh in

80% of all malicious attempts in Bulgaria are phishing attacks and about 57% of all Bulgarian institutions have to face and prevent hacker attacks on a daily...

Read Article

August 23, 2022 07:00 AM

A1 Bulgaria launches Roaming Revolution tariff plans

A1 Bulgaria launched Roaming Revolution, a tariff plan that enables communication in over 130 destinations, including popular tourist spots...

Read Article

August 10, 2022 07:00 AM

A1 Bulgaria closes buy of local STEMO in boost to corporate IT services

A1 Bulgaria, a unit of A1 Telekom Austria Group, said on Wednesday that it has completed the acquisition of the entire share capital of...

Read Article

May 26, 2022 07:00 AM

A1 Telekom Austria buys Bulgaria’s Stemo

A1 Telekom Austria has acquired the leading Bulgarian ICT company Stemo for an undisclosed fee. Commenting on the development,...

Read Article

August 23, 2021 07:00 AM

Nokia and Ericsson win 5G contracts with A1 in the Balkans

A1 Telekom Austria Group has chosen Ericsson and Nokia as equipment suppliers for its 5G network deployments in Bulgaria, Croatia, Serbia and Slovenia.

Read Article

June 10, 2021 07:00 AM

A1 Bulgaria taps Nokia for 5G RAN

A1 Bulgaria has chosen Nokia as the main equipment supplier for its radio access network (RAN).

Read Article

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CVE

Latest

Global CVEs (Not Company-Specific)

CVE-2026-94057

SUMMARY

Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead depends on crafted data sent after a rejection during DATA processing.

Published

Date2026-09-19

Updated

Date2026-09-19

RISK INFORMATION (Score: 4)

cvss3

Base Score: 4.0

Complexity: HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Impact Score

1.4

Exploitability

2.2

REFERENCES

https://lists.exim.org/lurker/message/20260918.121220.0f87338e.en.html

CVE-2026-94056

SUMMARY

Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, allows attackers to read certain uninitialized data from stack memory.

Published

Date2026-09-19

Updated

Date2026-09-19

RISK INFORMATION (Score: 7.5)

cvss3

Base Score: 7.5

Complexity: HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:L

Impact Score

4.7

Exploitability

2.2

REFERENCES

https://lists.exim.org/lurker/message/20260918.121220.0f87338e.en.html

CVE-2026-94055

SUMMARY

Exim before 4.100.1, when certain non-default TLS settings are used with GnuTLS, has a use-after-free.

Published

Date2026-09-19

Updated

Date2026-09-19

RISK INFORMATION (Score: 3.7)

cvss3

Base Score: 3.7

Complexity: HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Impact Score

1.4

Exploitability

2.2

REFERENCES

https://lists.exim.org/lurker/message/20260918.121220.0f87338e.en.html

CVE-2026-94054

SUMMARY

Exim before 4.100.1, when Proxy-Protocol is used with an attacker-controlled proxy, has an out-of-bounds write.

Published

Date2026-09-19

Updated

Date2026-09-19

RISK INFORMATION (Score: 7)

cvss3

Base Score: 7.0

Complexity: HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L

Impact Score

4.7

Exploitability

2.2

REFERENCES

https://lists.exim.org/lurker/message/20260918.121220.0f87338e.en.html

CVE-2026-93993

SUMMARY

Mistral Vibe before 2.25.5 contains a remote code execution vulnerability in the worktree creation process that executes git hooks before trust validation. Attackers can supply a repository with a crafted post-checkout hook that executes arbitrary shell commands with the privileges of the user running Vibe.

Published

Date2026-09-19

Updated

Date2026-09-19

RISK INFORMATION (Score: 8.8)

cvss3

Base Score: 8.8

Complexity: LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

cvss4

Base Score: 8.6

Complexity: LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/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

Impact Score

5.9

Exploitability

2.8

REFERENCES

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MEASURE

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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 SecurityIdentify 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 IntelligenceLeverage real-time insights on active threats, malware campaigns, and emerging vulnerabilities to proactively defend against evolving cyberattacks.

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A1 Bulgaria Vendor Cyber Rating & Cyber Score

A1 Bulgaria A.I CyberSecurity Scoring

A1 Bulgaria CyberSecurity News & History

A1 Bulgaria Company Scoring based on AI Models

Cyber Incidents Likelihood 3 - 6 - 9 months

Incident Predictions locked

A.I Risk Score Likelihood 3 - 6 - 9 months

A.I. Risk Score Predictions locked

Underwriter Stats for A1 Bulgaria

Incidents vs Telecommunications Industry Avg (This Year)

Incidents vs All-Companies Average (This Year)

Incident Types A1 Bulgaria vs Telecommunications Industry Avg (This Year)

Incident History - A1 Bulgaria (X = Date, Y = Severity)

A1 Bulgaria Subsidiaries

A1 Bulgaria

A1 Bulgaria Similar Companies

Grupo Televisa

Airtel Africa

Idea Cellular Ltd

A1 Telekom Austria Group

Telcel

Jazz

Telia

Globe Telecom

TIM

A1 Bulgaria CyberSecurity News

Everything You Need to Know About Internet Access in Bulgaria (Even the Satellites!)

Vodafone, A1 Group and Ericsson establish world first 5G Standalone international roaming connection between two operator groups

A1 Group trials Nokia’s 5G Standalone (SA) Cloud RAN solution on their commercial 5G network

How Prepared is Bulgaria to Fight Cyber Attacks? Experts Weigh in

A1 Bulgaria launches Roaming Revolution tariff plans

A1 Bulgaria closes buy of local STEMO in boost to corporate IT services

A1 Telekom Austria buys Bulgaria’s Stemo

Nokia and Ericsson win 5G contracts with A1 in the Balkans

A1 Bulgaria taps Nokia for 5G RAN

Global CVEs (Not Company-Specific)

Access Data Using Our API

What Do We Measure ?

These are some of the factors we use to calculate the overall score:

Rankiteo

A1 Bulgaria CyberSecurity News & History

A1 Bulgaria Company Scoring based on AI Models

Cyber Incidents Likelihood 3 - 6 - 9 months

Incident Predictions locked

A.I Risk Score Likelihood 3 - 6 - 9 months

A.I. Risk Score Predictions locked

Underwriter Stats for A1 Bulgaria

Incidents vs Telecommunications Industry Avg (This Year)

Incidents vs All-Companies Average (This Year)

Incident Types A1 Bulgaria vs Telecommunications Industry Avg (This Year)

Incident History - A1 Bulgaria (X = Date, Y = Severity)

A1 Bulgaria Subsidiaries

A1 Bulgaria

A1 Bulgaria Similar Companies

Grupo Televisa

Airtel Africa

Idea Cellular Ltd

A1 Telekom Austria Group

Telcel

Jazz

Telia

Globe Telecom

TIM

A1 Bulgaria CyberSecurity News

Everything You Need to Know About Internet Access in Bulgaria (Even the Satellites!)

Vodafone, A1 Group and Ericsson establish world first 5G Standalone international roaming connection between two operator groups

A1 Group trials Nokia’s 5G Standalone (SA) Cloud RAN solution on their commercial 5G network

How Prepared is Bulgaria to Fight Cyber Attacks? Experts Weigh in

A1 Bulgaria launches Roaming Revolution tariff plans

A1 Bulgaria closes buy of local STEMO in boost to corporate IT services

A1 Telekom Austria buys Bulgaria’s Stemo

Nokia and Ericsson win 5G contracts with A1 in the Balkans

A1 Bulgaria taps Nokia for 5G RAN

Global CVEs (Not Company-Specific)

Access Data Using Our API

What Do We Measure ?

These are some of the factors we use to calculate the overall score:

Rankiteo