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Comparison Overview

Vivo (Telefônica Brasil)Vivo (Telefônica Brasil)
VS
T-MobileT-Mobile
Vivo (Telefônica Brasil)

Vivo (Telefônica Brasil)

Avenida Eng. Luís Carlos Berrini, 1376, São Paulo, 04571 - 000, BR

Last Update: 01/04/2026

View Profile
Between 800 and 849
http://www.vivo.com.br
800/1000Good

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 p...

NAICS:517
NAICS Definition:Telecommunications
Employees:38,994
Subsidiaries:20
12-month incidents
0
Known data breaches
0
Attack type number
0
T-Mobile

T-Mobile

12920 SE 38th St, Bellevue, WA, US, 98006

Last Update: 03/07/2026

View Profile
Between 0 and 549
https://t-mobile.com
454/1000Critical

As the supercharged Un-carrier, T-Mobile US, Inc. (NASDAQ: TMUS) is powered by an award-winning 5G network that connects more people, in more places, than ever before. With T-Mobile’s unique value proposition of best network, best value, and best experiences, the Un-car...

NAICS:517
NAICS Definition:Telecommunications
Employees:95,676
Subsidiaries:9
12-month incidents
3
Known data breaches
20
Attack type number
4

Compliance Ranges Comparison

Based On Specific Ai Models Category
Vivo (Telefônica Brasil)

Vivo (Telefônica Brasil)

-
ISO 27001Not verified
ISO 27001
-
SOC2 Type 1Not verified
SOC2 Type 1
-
SOC2 Type 2Not verified
SOC2 Type 2
-
GDPRNot verified
GDPR
-
PCI DSSNot verified
PCI DSS
-
HIPAANot verified
HIPAA
T-Mobile

T-Mobile

-
ISO 27001Not verified
ISO 27001
-
SOC2 Type 1Not verified
SOC2 Type 1
-
SOC2 Type 2Not verified
SOC2 Type 2
-
GDPRNot verified
GDPR
-
PCI DSSNot verified
PCI DSS
-
HIPAANot verified
HIPAA

Benchmark & Cyber Underwriting Signals

Incidents vs Telecommunications Industry Avg (This Year)

No incidents recorded for Vivo (Telefônica Brasil) in 2026.

Incidents

Incidents vs Telecommunications Industry Avg (This Year)

T-Mobile has 183.02% more incidents than the average of all companies with at least one recorded incident.

Incidents

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

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

R - Ransomware
C - Cyber Attack
D - Data Breach
V - Vulnerability

Incident History - T-Mobile (X = Date, Y = Severity)

T-Mobile cyber incidents detection timeline including parent company and subsidiaries.

R - Ransomware
C - Cyber Attack
D - Data Breach
V - Vulnerability

Notable Incidents

Last Cyber / HR Incidents / Global...
Vivo (Telefônica Brasil)

Vivo (Telefônica Brasil)

Incidents
No explicit notable incidents reported.
T-Mobile

T-Mobile

Incidents
🔒 Incident : Breach
T-M1775514990
🔒 Incident : Breach
T-M1774995874
🔒 Incident : Breach
T-M1775061177

FAQ

Between Vivo (Telefônica Brasil) company and T-Mobile company, which one has the best AI Cybersecurity Score ?
Between Vivo (Telefônica Brasil) company and T-Mobile company, which one has experienced more cyber incidents in the past ?
Between Vivo (Telefônica Brasil) company and T-Mobile company, which one has experienced more cyber incidents this year ?
Between Vivo (Telefônica Brasil) company and T-Mobile company, which one has experienced at least one ransomware attack ?
Between Vivo (Telefônica Brasil) company and T-Mobile company, which one has experienced at least one data breach ?
Between Vivo (Telefônica Brasil) company and T-Mobile company, which one has experienced at least one targeted cyberattack ?
Between Vivo (Telefônica Brasil) company and T-Mobile company, which one has experienced at least one vulnerability ?
Between Vivo (Telefônica Brasil) company and T-Mobile company, which one holds the most compliance certifications ?
Between Vivo (Telefônica Brasil) company and T-Mobile company, which one holds the fewest compliance certifications ?
Between Vivo (Telefônica Brasil) company and T-Mobile company, which one has the most subsidiaries ?
Between Vivo (Telefônica Brasil) company and T-Mobile company, which one has the largest number of employees ?
Between Vivo (Telefônica Brasil) and T-Mobile, which company holds both SOC 2 Type 1 certifications ?
Between Vivo (Telefônica Brasil) and T-Mobile, which company holds both SOC 2 Type 2 certifications ?
Which company is ISO 27001 certified - Vivo (Telefônica Brasil) or T-Mobile ?
Which company is PCI DSS compliant - Vivo (Telefônica Brasil) or T-Mobile ?
Between Vivo (Telefônica Brasil) and T-Mobile, which company complies with HIPAA regulations for healthcare data ?
Between Vivo (Telefônica Brasil) and T-Mobile, which company complies with GDPR requirements ?

Latest Global CVEs

CVE-2026-57100
SUMMARY

Server-side request forgery (ssrf) in Microsoft Entra Provisioning Service (SyncFabric) allows an authorized attacker to elevate privileges over a network.

PUBLISHED
Date2026-07-02
UPDATED
Date2026-07-02
RISK INFORMATION (Score: 9.9)
CVSS3
Base Score: 9.9
Complexity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
IMPACT SCORE
6
EXPLOITABILITY
3.1
REFERENCES
CVE-2026-54998
SUMMARY

Incorrect authorization in Microsoft Exchange Online allows an authorized attacker to elevate privileges over a network.

PUBLISHED
Date2026-07-02
UPDATED
Date2026-07-02
RISK INFORMATION (Score: 8.8)
CVSS3
Base Score: 8.8
Complexity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
IMPACT SCORE
5.9
EXPLOITABILITY
2.8
REFERENCES
CVE-2026-45499
SUMMARY

Server-side request forgery (ssrf) in Azure OpenAI allows an authorized attacker to elevate privileges over a network.

PUBLISHED
Date2026-07-02
UPDATED
Date2026-07-02
RISK INFORMATION (Score: 9.9)
CVSS3
Base Score: 9.9
Complexity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
IMPACT SCORE
6
EXPLOITABILITY
3.1
REFERENCES
CVE-2026-41106
SUMMARY

Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.

PUBLISHED
Date2026-07-02
UPDATED
Date2026-07-02
RISK INFORMATION (Score: 9.3)
CVSS3
Base Score: 9.3
Complexity: LOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
IMPACT SCORE
5.8
EXPLOITABILITY
2.8
REFERENCES
CVE-2026-26145
SUMMARY

Improper access control in Azure Synapse allows an authorized attacker to elevate privileges over a network.

PUBLISHED
Date2026-07-02
UPDATED
Date2026-07-02
RISK INFORMATION (Score: 4.8)
CVSS3
Base Score: 4.8
Complexity: HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
IMPACT SCORE
3.6
EXPLOITABILITY
1.2
REFERENCES