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Gilead Sciences

Gilead Sciences Vendor Cyber Rating & Cyber Score

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At Gilead, we set – and achieve – bold ambitions to create a healthier world for all people. From our pioneering virology medicines to our growing impact in oncology, we're delivering innovations once thought impossible in medicine. Our focus goes beyond medicines, and we also strive to remedy health inequities and break down barriers to care. We empower our people to tackle these challenges, and we’re all united in our commitment to help millions of people live healthier lives. Social Media Guidelines: https://www.gilead.com/social-media-guidelines


Gilead Sciences A.I CyberSecurity Scoring

Incident Details
Gilead Sciences
Company Information
Website:http://www.gilead.com
Employees number:14,605
Number of followers:792,598
NAICS:541714
Industry Type:Biotechnology Research
Homepage:gilead.com
Cyber Premium EstimationGet Supply Chain
Gilead Sciences Risk Score (AI oriented)
Between 800 and 849
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Gilead SciencesBiotechnology Research
Updated:
20/05/2026
804/1000
Good
A
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Gilead Sciences Global Score (TPRM)
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Gilead SciencesBiotechnology Research
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Gilead Sciences
Gilead SciencesGood
Current Score
804A (GOOD)
01000
2 incidents
0 avg impact
Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.
JUNE 2026
803Before Incident
MAY 2026
804Before Incident
APRIL 2026
804Before Incident
MARCH 2026
803Before Incident
FEBRUARY 2026
803Before Incident
JANUARY 2026
800Before Incident
DECEMBER 2025
800Before Incident
NOVEMBER 2025
800Before Incident
OCTOBER 2025
800Before Incident
SEPTEMBER 2025
799Before Incident
AUGUST 2025
798Before Incident
JULY 2025
797Before Incident
FEBRUARY 2025
830Before Incident
Breach
12 Feb 2025 • Gilead Sciences
Gilead Sciences, Inc.

Gilead Sciences, Inc. Data Breach via Mailing Error

794After Incident
HIGH-36
GIL957091725
On April 2, 2025, the Maine Office of the Attorney General disclosed a data breach involving Gilead Sciences, Inc., stemming from an inadvertent mailing error by Billing Document Specialists. The incident, detected on February 18, 2025, resulted in the unauthorized disclosure of sensitive personal information—specifically Social Security numbers—of 12,224 individuals, including 4 residents in California. The breach occurred due to a procedural failure in handling physical mail, leading to the exposure of confidential financial identifiers without evidence of malicious cyber activity or further exploitation. While the exposed data carries high sensitivity, there were no reports of identity theft, financial fraud, or systemic compromise linked to the incident. The company likely initiated remediation measures, such as notifications to affected parties and regulatory bodies, but the breach’s scope remained contained to document mishandling rather than a targeted cyberattack or systemic vulnerability exploitation.
INCIDENT DETAILS -
TYPE
Data Breach
IMPACT
Social Security numbersBrand Reputation Impact: Potential reputational harm due to exposure of sensitive personal dataIdentity Theft Risk: High (due to exposure of Social Security numbers)
DATA BREACH
Social Security numbersNumber Of Records Exposed: 12,224Sensitivity Of Data: High (Personally Identifiable Information)Data Exfiltration: No (inadvertent disclosure via mailing error)Personally Identifiable Information: Yes
REFERENCES
Blog URLSource URL
MAY 2020
828Before Incident
Cyber Attack
01 May 2020 • Gilead Sciences
Gilead Sciences

Cyber Attack on Gilead Sciences by Iran-Linked Hackers

821After Incident
CRITICAL-7
GIL1527222
The employees of drugmaker company Gilead Sciences were targeted by some hackers linked to Iran. The web domains and hosting servers and fake email logins were used to compromise the company's servers.
INCIDENT DETAILS -
TYPE
Cyber Attack
IMPACT
Servers
REFERENCES
Blog URLSource URL

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