Comparison Overview

TalkTalk

VS

Vivo (Telefônica Brasil)

TalkTalk

Ordsall Lane, Salford, England, GB, M5 3
Last Update: 2025-12-09
View Profile
Between 700 and 749
https://careers.talktalk.co.uk/

Welcome to the bolder, braver, electric green world of TalkTalk. We’ve got an updated look, but it’s not just a fresh coat of paint; it’s a new chapter aimed at delivering a better way to Wi-Fi. Part of our ongoing commitment to place customers at the heart of everything we do. Here at TalkTalk, we believe that diversity fuels innovation and success. We’re not your traditional 9-5. We’re a dynamic, flexible workplace. We only ask for skills, strengths, talents and potential – nothing more. Well, apart from being as excited as we are about where we’re going! Check out our careers site for more info.

NAICS: 517
NAICS Definition: Telecommunications
Employees: 1,652
Subsidiaries: 0
12-month incidents
0
Known data breaches
2
Attack type number
2
View Profile

Vivo (Telefônica Brasil)

Avenida Eng. Luís Carlos Berrini, 1376, São Paulo, SP, BR, 04571 - 000
Last Update: 2025-12-09
Between 750 and 799
http://www.vivo.com.br

Vivo (Telefônica Brasil) is part of the Telefónica Group and with more than 94 million customers, of which 75 million mobile and 19 million fixed, we are the largest telecommunications company in Brazil, with nationwide presence and a complete, convergent portfolio of products, combining fixed, mobile and digital services. Our purpose is “Digitalize to Bring Closer”, helping to build a digital nation and transforming the life of our customers. More and more, we connect people and things with Fiber, 4G and 4.5G and cover more cities with the network quality that only Vivo has. Today, we cover around 90% of the population with 4G and are accelerating the launch of cities with 4.5G, using carrier aggregation technology. In the fixed operation, we ended 2019 with 21 million homes-passed (HPs) with fiber optic technology, of which 11 million HPs with FTTH (fiber to the home). In addition, all cities with FTTH technology also offer TV over fiber (IPTV), aiming to offer the best speed and experience to our consumers. At Vivo, we also do more than just telecommunications. Within the Group, we have the Telefônica Vivo Foundation, that is committed to making education a priority, developing projects that are based on human potential and use technology as an instrument in favor of inclusion and digital culture.

NAICS: 517
NAICS Definition: Telecommunications
Employees: 37,866
Subsidiaries: 20
12-month incidents
0
Known data breaches
0
Attack type number
1

Compliance Badges Comparison

Security & Compliance Standards Overview

https://images.rankiteo.com/companyimages/talktalk.jpeg
TalkTalk
—
ISO 27001
ISO 27001 certification not verified
Not verified
—
SOC2 Type 1
SOC2 Type 1 certification not verified
Not verified
—
SOC2 Type 2
SOC2 Type 2 certification not verified
Not verified
—
GDPR
GDPR certification not verified
Not verified
—
PCI DSS
PCI DSS certification not verified
Not verified
—
HIPAA
HIPAA certification not verified
Not verified
https://images.rankiteo.com/companyimages/vivo-telefonicabr.jpeg
Vivo (Telefônica Brasil)
—
ISO 27001
ISO 27001 certification not verified
Not verified
—
SOC2 Type 1
SOC2 Type 1 certification not verified
Not verified
—
SOC2 Type 2
SOC2 Type 2 certification not verified
Not verified
—
GDPR
GDPR certification not verified
Not verified
—
PCI DSS
PCI DSS certification not verified
Not verified
—
HIPAA
HIPAA certification not verified
Not verified
Compliance Summary
TalkTalk
100%
Compliance Rate
0/4 Standards Verified
Vivo (Telefônica Brasil)
0%
Compliance Rate
0/4 Standards Verified

Benchmark & Cyber Underwriting Signals

Incidents vs Telecommunications Industry Average (This Year)

No incidents recorded for TalkTalk in 2025.

Incidents vs Telecommunications Industry Average (This Year)

No incidents recorded for Vivo (Telefônica Brasil) in 2025.

Incident History — TalkTalk (X = Date, Y = Severity)

TalkTalk cyber incidents detection timeline including parent company and subsidiaries

Incident History — Vivo (Telefônica Brasil) (X = Date, Y = Severity)

Vivo (Telefônica Brasil) cyber incidents detection timeline including parent company and subsidiaries

Notable Incidents

Last 3 Security & Risk Events by Company

https://images.rankiteo.com/companyimages/talktalk.jpeg
TalkTalk
Incidents

Date Detected: 08/2017
Type:Data Leak
Attack Vector: Internal Employee Access
Motivation: Unauthorized Access
Blog: Blog

Date Detected: 2/2017
Type:Breach
Motivation: Financial gain
Blog: Blog

Date Detected: 10/2016
Type:Breach
Blog: Blog
https://images.rankiteo.com/companyimages/vivo-telefonicabr.jpeg
Vivo (Telefônica Brasil)
Incidents

Date Detected: 5/2025
Type:Ransomware
Attack Vector: Internal Jira development and ticketing server
Motivation: Ransom
Blog: Blog

FAQ

Vivo (Telefônica Brasil) company demonstrates a stronger AI Cybersecurity Score compared to TalkTalk company, reflecting its advanced cybersecurity posture governance and monitoring frameworks.

TalkTalk company has faced a higher number of disclosed cyber incidents historically compared to Vivo (Telefônica Brasil) company.

In the current year, Vivo (Telefônica Brasil) company has reported more cyber incidents than TalkTalk company.

Vivo (Telefônica Brasil) company has confirmed experiencing a ransomware attack, while TalkTalk company has not reported such incidents publicly.

TalkTalk company has disclosed at least one data breach, while the other Vivo (Telefônica Brasil) company has not reported such incidents publicly.

Neither Vivo (Telefônica Brasil) company nor TalkTalk company has reported experiencing targeted cyberattacks publicly.

Neither TalkTalk company nor Vivo (Telefônica Brasil) company has reported experiencing or disclosing vulnerabilities publicly.

Neither TalkTalk nor Vivo (Telefônica Brasil) holds any compliance certifications.

Neither company holds any compliance certifications.

Vivo (Telefônica Brasil) company has more subsidiaries worldwide compared to TalkTalk company.

Vivo (Telefônica Brasil) company employs more people globally than TalkTalk company, reflecting its scale as a Telecommunications.

Neither TalkTalk nor Vivo (Telefônica Brasil) holds SOC 2 Type 1 certification.

Neither TalkTalk nor Vivo (Telefônica Brasil) holds SOC 2 Type 2 certification.

Neither TalkTalk nor Vivo (Telefônica Brasil) holds ISO 27001 certification.

Neither TalkTalk nor Vivo (Telefônica Brasil) holds PCI DSS certification.

Neither TalkTalk nor Vivo (Telefônica Brasil) holds HIPAA certification.

Neither TalkTalk nor Vivo (Telefônica Brasil) holds GDPR certification.

Latest Global CVEs (Not Company-Specific)

Description

NXLog Agent before 6.11 can load a file specified by the OPENSSL_CONF environment variable.

Published
Date
2025-12-14
Updated
Date
2025-12-14
Risk Information
cvss3
Base: 8.1
Severity: HIGH
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
References
Description

uriparser through 0.9.9 allows unbounded recursion and stack consumption, as demonstrated by ParseMustBeSegmentNzNc with large input containing many commas.

Published
Date
2025-12-14
Updated
Date
2025-12-14
Risk Information
cvss3
Base: 2.9
Severity: HIGH
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
References
Description

A vulnerability was detected in Mayan EDMS up to 4.10.1. The affected element is an unknown function of the file /authentication/. The manipulation results in cross site scripting. The attack may be performed from remote. The exploit is now public and may be used. Upgrading to version 4.10.2 is sufficient to fix this issue. You should upgrade the affected component. The vendor confirms that this is "[f]ixed in version 4.10.2". Furthermore, that "[b]ackports for older versions in process and will be out as soon as their respective CI pipelines complete."

Published
Date
2025-12-14
Updated
Date
2025-12-14
Risk Information
cvss2
Base: 5.0
Severity: LOW
AV:N/AC:L/Au:N/C:N/I:P/A:N
cvss3
Base: 4.3
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
cvss4
Base: 5.3
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/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
References
Description

MJML through 4.18.0 allows mj-include directory traversal to test file existence and (in the type="css" case) read files. NOTE: this issue exists because of an incomplete fix for CVE-2020-12827.

Published
Date
2025-12-14
Updated
Date
2025-12-14
Risk Information
cvss3
Base: 4.5
Severity: HIGH
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:L
References
Description

A half-blind Server Side Request Forgery (SSRF) vulnerability exists in kube-controller-manager when using the in-tree Portworx StorageClass. This vulnerability allows authorized users to leak arbitrary information from unprotected endpoints in the control plane’s host network (including link-local or loopback services).

Published
Date
2025-12-14
Updated
Date
2025-12-14
Risk Information
cvss3
Base: 5.8
Severity: HIGH
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N
References