Gilead Sciences
Company Details
Linkedin ID:
gilead-sciences
Website:
Employees number:
14,615
Number of followers:
738,160
NAICS:
541714
Industry Type:
Homepage:
gilead.com
IP Addresses:
245
Company ID:
GIL_6922720
Scan Status:
Completed
Gilead Sciences Company CyberSecurity Posture
gilead.com
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
Gilead Sciences Risk Score (AI oriented)Between 750 and 799
Gilead Sciences
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Gilead Sciences Global Score (TPRM)XXXX
Gilead Sciences
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Gilead Sciences Company CyberSecurity News & History
Past Incidents
2
Attack Types
2
Gilead Sciences, Inc.
Breach
Rankiteo Explanation
Attack with significant impact with internal employee data leaks
Description: 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.
Gilead Sciences
Cyber Attack
Rankiteo Explanation
Attack threatening the organization's existence
Description: 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.
Gilead Sciences 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 Gilead Sciences
Incidents vs Biotechnology Research Industry Average (This Year)
Gilead Sciences has 49.25% more incidents than the average of same-industry companies with at least one recorded incident.
Incidents vs All-Companies Average (This Year)
Gilead Sciences has 29.87% more incidents than the average of all companies with at least one recorded incident.
Incident Types Gilead Sciences vs Biotechnology Research Industry Avg (This Year)
Gilead Sciences reported 1 incidents this year: 0 cyber attacks, 0 ransomware, 0 vulnerabilities, 1 data breaches, compared to industry peers with at least 1 incident.
Incident History — Gilead Sciences (X = Date, Y = Severity)
Gilead Sciences cyber incidents detection timeline including parent company and subsidiaries
Gilead Sciences Company Subsidiaries
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
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Gilead Sciences CyberSecurity News
November 13, 2025 08:00 AM
Can Gilead Stock Outrun Regeneron In The Next Rally?
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Building breakthroughs: Gilead invests in U.S. innovation
Gilead invests in world-class science and is pursuing innovation across the therapeutic areas of virology, oncology and inflammation.
Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
Gilead Sciences CyberSecurity History Information
Official Website of Gilead Sciences
The official website of Gilead Sciences is http://www.gilead.com.
Gilead Sciences’s AI-Generated Cybersecurity Score
According to Rankiteo, Gilead Sciences’s AI-generated cybersecurity score is 799, reflecting their Fair security posture.
How many security badges does Gilead Sciences’ have ?
According to Rankiteo, Gilead Sciences currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
Does Gilead Sciences have SOC 2 Type 1 certification ?
According to Rankiteo, Gilead Sciences is not certified under SOC 2 Type 1.
Does Gilead Sciences have SOC 2 Type 2 certification ?
According to Rankiteo, Gilead Sciences does not hold a SOC 2 Type 2 certification.
Does Gilead Sciences comply with GDPR ?
According to Rankiteo, Gilead Sciences is not listed as GDPR compliant.
Does Gilead Sciences have PCI DSS certification ?
According to Rankiteo, Gilead Sciences does not currently maintain PCI DSS compliance.
Does Gilead Sciences comply with HIPAA ?
According to Rankiteo, Gilead Sciences is not compliant with HIPAA regulations.
Does Gilead Sciences have ISO 27001 certification ?
According to Rankiteo,Gilead Sciences is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Industry Classification of Gilead Sciences
Gilead Sciences operates primarily in the Biotechnology Research industry.
Number of Employees at Gilead Sciences
Gilead Sciences employs approximately 14,615 people worldwide.
Subsidiaries Owned by Gilead Sciences
Gilead Sciences presently has no subsidiaries across any sectors.
Gilead Sciences’s LinkedIn Followers
Gilead Sciences’s official LinkedIn profile has approximately 738,160 followers.
NAICS Classification of Gilead Sciences
Gilead Sciences is classified under the NAICS code 541714, which corresponds to Research and Development in Biotechnology (except Nanobiotechnology).
Gilead Sciences’s Presence on Crunchbase
Yes, Gilead Sciences has an official profile on Crunchbase, which can be accessed here: https://www.crunchbase.com/organization/gilead-sciences.
Gilead Sciences’s Presence on LinkedIn
Yes, Gilead Sciences maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/gilead-sciences.
Cybersecurity Incidents Involving Gilead Sciences
As of December 11, 2025, Rankiteo reports that Gilead Sciences has experienced 2 cybersecurity incidents.
Number of Peer and Competitor Companies
Gilead Sciences has an estimated 4,470 peer or competitor companies worldwide.
What types of cybersecurity incidents have occurred at Gilead Sciences ?
Incident Types: The types of cybersecurity incidents that have occurred include Cyber Attack and Breach.
How does Gilead Sciences detect and respond to cybersecurity incidents ?
Detection and Response: The company detects and responds to cybersecurity incidents through an communication strategy with public disclosure via maine office of the attorney general..
Incident Details
Can you provide details on each incident ?
Title: Cyber Attack on Gilead Sciences by Iran-Linked Hackers
Description: 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.
Type: Cyber Attack
Attack Vector: Phishing, Server Compromise
Threat Actor: Iran-Linked Hackers
Title: Gilead Sciences, Inc. Data Breach via Mailing Error
Description: The Maine Office of the Attorney General reported a data breach involving Gilead Sciences, Inc. The breach occurred due to an inadvertent disclosure of 12,224 individuals' information, including Social Security numbers, through a mailing error by Billing Document Specialists. The incident affected 4 residents in California.
Date Detected: 2025-02-18
Date Publicly Disclosed: 2025-04-02
Type: Data Breach
Attack Vector: Human Error (Mailing Error)
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 Breach.
How does the company identify the attack vectors used in incidents ?
Identification of Attack Vectors: The company identifies the attack vectors used in incidents through Fake Email Logins.
Impact of the Incidents
What was the impact of each incident ?
Incident : Cyber Attack GIL1527222
Systems Affected: Servers
Incident : Data Breach GIL957091725
Data Compromised: Social security numbers
Brand Reputation Impact: Potential reputational harm due to exposure of sensitive personal data
Identity Theft Risk: High (due to exposure of Social Security numbers)
What types of data are most commonly compromised in incidents ?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Social Security Numbers and .
Which entities were affected by each incident ?
Incident : Cyber Attack GIL1527222
Entity Name: Gilead Sciences
Entity Type: Company
Industry: Pharmaceuticals
Incident : Data Breach GIL957091725
Entity Name: Gilead Sciences, Inc.
Entity Type: Corporation
Industry: Biopharmaceutical
Location: United States
Customers Affected: 12,224 individuals (including 4 residents in California)
Incident : Data Breach GIL957091725
Entity Name: Billing Document Specialists
Entity Type: Third-Party Vendor
Industry: Document Processing
Response to the Incidents
What measures were taken in response to each incident ?
Incident : Data Breach GIL957091725
Communication Strategy: Public disclosure via Maine Office of the Attorney General
Data Breach Information
What type of data was compromised in each breach ?
Incident : Data Breach GIL957091725
Type of Data Compromised: Social security numbers
Number of Records Exposed: 12,224
Sensitivity of Data: High (Personally Identifiable Information)
Data Exfiltration: No (inadvertent disclosure via mailing error)
Personally Identifiable Information: Yes
Regulatory Compliance
Were there any regulatory violations and fines imposed for each incident ?
Incident : Data Breach GIL957091725
Regulatory Notifications: Maine Office of the Attorney General
References
Where can I find more information about each incident ?
Incident : Data Breach GIL957091725
Source: Maine Office of the Attorney General
Date Accessed: 2025-04-02
Where can stakeholders find additional resources on cybersecurity best practices ?
Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: Maine Office of the Attorney GeneralDate Accessed: 2025-04-02.
Investigation Status
How does the company communicate the status of incident investigations to stakeholders ?
Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through Public disclosure via Maine Office of the Attorney General.
Initial Access Broker
How did the initial access broker gain entry for each incident ?
Incident : Cyber Attack GIL1527222
Entry Point: Fake Email Logins,
Post-Incident Analysis
What were the root causes and corrective actions taken for each incident ?
Incident : Data Breach GIL957091725
Root Causes: Human error by third-party vendor (Billing Document Specialists) leading to inadvertent disclosure of sensitive data via mail.
Additional Questions
General Information
Who was the attacking group in the last incident ?
Last Attacking Group: The attacking group in the last incident was an Iran-Linked Hackers.
Incident Details
What was the most recent incident detected ?
Most Recent Incident Detected: The most recent incident detected was on 2025-02-18.
What was the most recent incident publicly disclosed ?
Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on 2025-04-02.
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 Social Security numbers and .
What was the most significant system affected in an incident ?
Most Significant System Affected: The most significant system affected in an incident was Servers.
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 was Social Security numbers.
What was the number of records exposed in the most significant breach ?
Number of Records Exposed in Most Significant Breach: The number of records exposed in the most significant breach was 12.2K.
References
What is the most recent source of information about an incident ?
Most Recent Source: The most recent source of information about an incident is Maine Office of the Attorney General.
Initial Access Broker
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Severity: LOW
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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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