BT Group
Company Details
Linkedin ID:
bt
Website:
Employees number:
75,585
Number of followers:
775,307
NAICS:
517
Industry Type:
Homepage:
bt.com
IP Addresses:
183
Company ID:
BT _1397370
Scan Status:
Completed
BT Group Company CyberSecurity Posture
bt.com
We’re one of the world’s leading communications services companies. At BT Group, the solutions we sell are integral to modern life. Our purpose is as simple as it is ambitious: we connect for good. There are no limits to what people can do when they connect. And as technology changes our world, connections are becoming even more important to everyday life. Today, that’s truer than ever. The connections we make are helping solve the world’s biggest challenges such as the global pandemic, climate change and cyber security. Through the power of technology, we’re supporting customers to live, work and play together better.
BT Group A.I CyberSecurity Scoring
BT Group Risk Score (AI oriented)Between 700 and 749
BT Group
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BT Group Global Score (TPRM)XXXX
BT Group
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BT Group Company CyberSecurity News & History
Past Incidents
2
Attack Types
2
BT Group
Ransomware
Rankiteo Explanation
Attack threatening the organization’s existence
Description: BT Group experienced a ransomware attack from the Black Basta group, leading to the shutdown of some of its servers. This cyberattack put sensitive data at risk, with the group claiming to have stolen 500GB encompassing financial data, organizational records, user and personal documents, NDAs, and confidential information. Although live BT Conferencing services remained operational and other customer services were unaffected, the incident raises concerns about potential data breaches and the overall cybersecurity posture of the company. Screenshots of the compromised data, including passports, were published as proof of the attack.
EE
Data Leak
Rankiteo Explanation
Attack with significant impact with internal employee data leaks
Description: A vital code system with a default password has been left exposed online by the EE operator, the biggest cellular network operator in the UK, which serves almost 30 million users. According to reports, EE, the massive British mobile network, left a crucial code repository on an open-source tool that is password-protected by default. Malicious hackers can use this to examine the source code and find weaknesses in it. An attacker might use the keys' accessibility to examine the employee payment systems' code and find weaknesses that they could use for malevolent intent.
BT Group 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 BT Group
Incidents vs Telecommunications Industry Average (This Year)
No incidents recorded for BT Group in 2025.
Incidents vs All-Companies Average (This Year)
No incidents recorded for BT Group in 2025.
Incident Types BT Group vs Telecommunications Industry Avg (This Year)
No incidents recorded for BT Group in 2025.
Incident History — BT Group (X = Date, Y = Severity)
BT Group cyber incidents detection timeline including parent company and subsidiaries
BT Group Company Subsidiaries
We’re one of the world’s leading communications services companies. At BT Group, the solutions we sell are integral to modern life. Our purpose is as simple as it is ambitious: we connect for good. There are no limits to what people can do when they connect. And as technology changes our world, connections are becoming even more important to everyday life. Today, that’s truer than ever. The connections we make are helping solve the world’s biggest challenges such as the global pandemic, climate change and cyber security. Through the power of technology, we’re supporting customers to live, work and play together better.
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BT Group CyberSecurity News
November 27, 2025 10:50 AM
'It will create new jobs and provide opportunities': BT unveils £45million innovation drive to boost AI, IoT and cybersecurity research in Northern Ireland
The new Future Technology Research and Innovation programme in Belfast – supported by Ulster University and Invest NI – will create 60...
November 01, 2025 07:00 AM
UK small businesses face surge in cyberattacks as BT acts
UK small businesses face a 300% rise in daily cyber scans, prompting BT to launch AI-powered antivirus to shield SMEs from growing cyber...
October 31, 2025 02:33 PM
BT launches AI-powered Cybersecurity for SMEs as Business Devices Face 4,000 Daily Scans
Cyber criminals are stepping up their surveillance of British businesses, scanning online devices more than 4,000 times a day to identify...
October 30, 2025 07:00 AM
CrowdStrike and BT Partner to Transform UK SMB Cybersecurity
CrowdStrike (NASDAQ: CRWD) today announced a strategic partnership with BT to launch BT Business Antivirus Detect and Respond,...
October 30, 2025 07:00 AM
BT, CrowdStrike Team Up To Bring AI Cybersecurity To UK Small Businesses
CRWD Price Action: CrowdStrike Holdings shares were down 0.45% at $543.05 during premarket trading on Thursday. The stock is trading near its 52...
October 30, 2025 07:00 AM
BT teams with CrowdStrike to launch new cybersecurity service for SMBs
BT Group has partnered with CrowdStrike to launch a new cybersecurity service for SMBs in the UK, powered by CrowdStrike Falcon Go.
October 30, 2025 07:00 AM
Why the NHS needs a unified approach to cyber security
We need a shift in how cyber security is perceived, writes Dr Mick Quinn, consultant physician and member of BT's clinical advisory board.
October 16, 2025 07:00 AM
Mastercard leads Europe’s first cyber defence test
Mastercard has launched the first European edition of its multi-sector Cyber Defense Exercise (CDX), hosted at the company's European Cyber...
October 15, 2025 07:00 AM
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Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
BT Group CyberSecurity History Information
Official Website of BT Group
The official website of BT Group is https://www.bt.com/about.
BT Group’s AI-Generated Cybersecurity Score
According to Rankiteo, BT Group’s AI-generated cybersecurity score is 741, reflecting their Moderate security posture.
How many security badges does BT Group’ have ?
According to Rankiteo, BT Group currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
Does BT Group have SOC 2 Type 1 certification ?
According to Rankiteo, BT Group is not certified under SOC 2 Type 1.
Does BT Group have SOC 2 Type 2 certification ?
According to Rankiteo, BT Group does not hold a SOC 2 Type 2 certification.
Does BT Group comply with GDPR ?
According to Rankiteo, BT Group is not listed as GDPR compliant.
Does BT Group have PCI DSS certification ?
According to Rankiteo, BT Group does not currently maintain PCI DSS compliance.
Does BT Group comply with HIPAA ?
According to Rankiteo, BT Group is not compliant with HIPAA regulations.
Does BT Group have ISO 27001 certification ?
According to Rankiteo,BT Group is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Industry Classification of BT Group
BT Group operates primarily in the Telecommunications industry.
Number of Employees at BT Group
BT Group employs approximately 75,585 people worldwide.
Subsidiaries Owned by BT Group
BT Group presently has no subsidiaries across any sectors.
BT Group’s LinkedIn Followers
BT Group’s official LinkedIn profile has approximately 775,307 followers.
NAICS Classification of BT Group
BT Group is classified under the NAICS code 517, which corresponds to Telecommunications.
BT Group’s Presence on Crunchbase
Yes, BT Group has an official profile on Crunchbase, which can be accessed here: https://www.crunchbase.com/organization/bt.
BT Group’s Presence on LinkedIn
Yes, BT 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/bt.
Cybersecurity Incidents Involving BT Group
As of November 27, 2025, Rankiteo reports that BT Group has experienced 2 cybersecurity incidents.
Number of Peer and Competitor Companies
BT Group has an estimated 9,533 peer or competitor companies worldwide.
What types of cybersecurity incidents have occurred at BT Group ?
Incident Types: The types of cybersecurity incidents that have occurred include Data Leak and Ransomware.
Incident Details
Can you provide details on each incident ?
Title: EE Operator Code Repository Exposure
Description: A vital code system with a default password has been left exposed online by the EE operator, the biggest cellular network operator in the UK, which serves almost 30 million users.
Type: Data Exposure
Attack Vector: Exposed Default Password
Vulnerability Exploited: Default Password on Code Repository
Threat Actor: Unknown
Motivation: Unintentional Exposure
Title: BT Group Ransomware Attack
Description: BT Group experienced a ransomware attack from the Black Basta group, leading to the shutdown of some of its servers. This cyberattack put sensitive data at risk, with the group claiming to have stolen 500GB encompassing financial data, organizational records, user and personal documents, NDAs, and confidential information. Although live BT Conferencing services remained operational and other customer services were unaffected, the incident raises concerns about potential data breaches and the overall cybersecurity posture of the company. Screenshots of the compromised data, including passports, were published as proof of the attack.
Type: Ransomware
Threat Actor: Black Basta group
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.
Impact of the Incidents
What was the impact of each incident ?
Incident : Data Exposure EE410251223
Data Compromised: Source code, Employee payment systems code
Systems Affected: Code Repository
Incident : Ransomware BT000120524
Data Compromised: Financial data, Organizational records, User and personal documents, Ndas, Confidential information
What types of data are most commonly compromised in incidents ?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Source Code, Employee Payment Systems Code, , Financial Data, Organizational Records, User And Personal Documents, Ndas, Confidential Information and .
Which entities were affected by each incident ?
Incident : Data Exposure EE410251223
Entity Name: EE Operator
Entity Type: Telecommunications Company
Industry: Telecommunications
Location: UK
Customers Affected: Almost 30 million users
Data Breach Information
What type of data was compromised in each breach ?
Incident : Data Exposure EE410251223
Type of Data Compromised: Source code, Employee payment systems code
Incident : Ransomware BT000120524
Type of Data Compromised: Financial data, Organizational records, User and personal documents, Ndas, Confidential information
Ransomware Information
Was ransomware involved in any of the incidents ?
Incident : Ransomware BT000120524
Data Exfiltration: True
Additional Questions
General Information
Who was the attacking group in the last incident ?
Last Attacking Group: The attacking group in the last incident were an Unknown and Black Basta group.
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 Source Code, Employee Payment Systems Code, , financial data, organizational records, user and personal documents, NDAs, confidential information and .
What was the most significant system affected in an incident ?
Most Significant System Affected: The most significant system affected in an incident was Code Repository.
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 confidential information, Source Code, Employee Payment Systems Code, NDAs, organizational records, financial data and user and personal documents.
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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.
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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.
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Leverage real-time insights on active threats, malware campaigns, and emerging vulnerabilities to proactively defend against evolving cyberattacks.
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