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Yubico

Yubico Vendor Cyber Rating & Cyber Score

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Yubico (Nasdaq Stockholm: YUBICO), the inventor of the YubiKey, offers the gold standard for phishing-resistant multi-factor authentication (MFA), stopping account takeovers in their tracks and making secure login easy and available for everyone. Since the company was founded in 2007, it has been a leader in setting global standards for secure access to computers, mobile devices, servers, browsers, and internet accounts. Yubico is a creator and core contributor to the FIDO2, WebAuthn, and FIDO Universal 2nd Factor (U2F) open authentication standards, and is a pioneer in delivering hardware-based passwordless authentication using the highest assurance passkeys to customers in 160+ countries. Yubico’s solutions enable passwordless logins


Yubico A.I CyberSecurity Scoring

Incident Details
Yubico
Company Information
Website:http://www.yubico.com
Employees number:598
Number of followers:74,720
NAICS:541514
Industry Type:Computer and Network Security
Homepage:yubico.com
Cyber Premium EstimationGet Supply Chain
Yubico Risk Score (AI oriented)
Between 750 and 799
logo
YubicoComputer and Network Security
Updated:
04/04/2026
751/1000
Fair
Baa
AaaAaABaaBaBCaaCaC
Powered by our proprietary A.I cyber incident model
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Yubico Global Score (TPRM)
xxxx
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YubicoComputer and Network Security
•••
Score locked
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Vulnerabilities
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Findings

Yubico
YubicoFair
Current Score
751Baa (FAIR)
01000
1 incidents
0 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
JULY 2026
752Before Incident
JUNE 2026
752Before Incident
MAY 2026
751Before Incident
APRIL 2026
751Before Incident
MARCH 2026
751Before Incident
FEBRUARY 2026
751Before Incident
JANUARY 2026
750Before Incident
DECEMBER 2025
750Before Incident
NOVEMBER 2025
750Before Incident
OCTOBER 2025
750Before Incident
SEPTEMBER 2025
750Before Incident
AUGUST 2025
750Before Incident
SEPTEMBER 2024
749Before Incident
Vulnerability
01 Sep 2024 • Yubico
Yubico

Cryptographic Flaw in YubiKey 5 Series

748After Incident
CRITICAL-1
YUB004090624
Yubico, renowned for its YubiKey 5 series hardware tokens used for two-factor authentication, faced a significant issue with a cryptographic flaw allowing cloning of the devices. This vulnerability was identified as a side channel in the Infineon microcontroller used across several authentication products. Because updating the YubiKey firmware isn't feasible, all keys with firmware versions older than 5.7 remain permanently at risk. The exploitation of this flaw requires physical access and sophisticated technical knowledge. Although the implications are concerning, there has been no reported misuse of this flaw thus far.
INCIDENT DETAILS -
TYPE
Cryptographic Vulnerability
IMPACT
Systems Affected: YubiKey 5 series devices with firmware versions older than 5.7
REFERENCES
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