Quest Diagnostics Company Cyber Security Posture
questdiagnostics.comQuest Diagnostics (NYSE: DGX) empowers people to take action to improve health outcomes. Derived from the world's largest database of clinical lab results, our diagnostic insights reveal new avenues to identify and treat disease, inspire healthy behaviors and improve health care management. Quest annually serves one in three adult Americans and half the physicians and hospitals in the United States, and our 47,000 employees understand that, in the right hands and with the right context, our diagnostic insights can inspire actions that transform lives. The company offers physicians the broadest test menu (3,000+ tests), is a pioneer in developing innovative new tests, is the leader in cancer diagnostics, provides anatomic pathology (AP) services, & interpretive consultation through its medical & scientific staff of about 900 M.D.s & Ph.D.s. The company reported 2020 revenues of $9.44 billion. Quest Diagnostics offers the most extensive clinical testing network in the U.S., with laboratories in most major metropolitan areas, & in Mexico, the UK & India. The company also operates four esoteric laboratories, 40 outpatient AP laboratories, & 160 smaller, rapid-response laboratories. Patients may have specimens collected in any of the companyโs approximately 2,250 patient service centers. On a typical workday, testing is performed for about 550,000 patients. Quest Diagnostics empowers healthcare organizations & clinicians with state-of-the-art connectivity solutions. The company is the leading provider of pre-employment drugs-of-abuse screening for employers & risk assessment services for the life insurance industry. It is the worldโs 2nd largest provider of clinical trials testing for new pharmaceuticals. More information is available at www.questdiagnostics.com. Language Assistance / Non-Discrimination Notice Asistencia de Idiomas / Aviso de no Discriminaciรณn ่ช่จๅๅฉ / ไธๆญง่ฆ้็ฅ www.QuestDiagnostics.com/home/nondiscrimination
Quest Diagnostics Company Details
quest-diagnostics
30143 employees
332292.0
621
Medical and Diagnostic Laboratories
questdiagnostics.com
Scan still pending
QUE_1512071
In-progress
Quest Diagnostics Risk Score (AI oriented)Between 900 and 1000
This score is AI-generated and less favored by cyber insurers, who prefer the TPRM score.
Quest Diagnostics Global Score.png)
Quest Diagnostics Company Scoring based on AI Models
| Model Name | Date | Description | Current Score Difference | Score |
|---|---|---|---|---|
| AVERAGE-Industry | 03-12-2025 | This score represents the average cybersecurity rating of companies already scanned within the same industry. It provides a benchmark to compare an individual company's security posture against its industry peers. | N/A | Between 900 and 1000 |
Quest Diagnostics Company Cyber Security News & History
| Entity | Type | Severity | Impact | Seen | Url ID | Details | View |
|---|---|---|---|---|---|---|---|
| Quest Diagnostics | Breach | 60 | 3 | 10/2021 | QUE049072425 | Link | |
Rankiteo Explanation : Attack with significant impact with internal employee data leaksDescription: The California Office of the Attorney General reported a data breach involving Quest Diagnostics on November 16, 2021. The breach occurred on October 29, 2021, due to an inadvertent email sent containing a spreadsheet with personal information of current and former employees. The information included names, Social Security Numbers, and employee ID numbers, with some individuals potentially having personal email addresses compromised. | |||||||
| Quest Diagnostics | Breach | 85 | 4 | 11/2016 | QUE238072625 | Link | |
Rankiteo Explanation : Attack with significant impact with customers data leaksDescription: The California Office of the Attorney General reported a data breach involving Quest Diagnostics on December 12, 2016. The breach occurred on November 26, 2016, when an unauthorized third party accessed the MyQuest by Care360ยฎ internet application, compromising Protected Health Information (PHI) of approximately 34,000 patients, which included names, dates of birth, and lab results. | |||||||
| Quest Diagnostics | Breach | 60 | 4 | 11/2014 | QUE523072725 | Link | |
Rankiteo Explanation : Attack with significant impact with customers data leaksDescription: The California Office of the Attorney General reported a data breach involving Quest Diagnostics on December 19, 2014. The breach occurred on November 17, 2014, when an employee mistakenly sent personal information via secured email to outside parties. Approximately 34,000 individuals were affected, with compromised information including names, addresses, Social Security numbers, and dates of birth. | |||||||
| Quest Diagnostics, Incorporated | Breach | 85 | 4 | 8/2024 | QUE257072725 | Link | |
Rankiteo Explanation : Attack with significant impact with customers data leaksDescription: The Maine Office of the Attorney General reported a data breach involving Quest Diagnostics on October 25, 2024. The breach, which was discovered on August 27, 2024, involved inadvertent disclosure of personal information and affected a total of 1,062 individuals, including 4 residents of Maine. | |||||||
| Quest Diagnostics | Ransomware | 100 | 5 | 11/2021 | QUE93731122 | Link | |
Rankiteo Explanation : Attack threatening the organization's existenceDescription: Quest Diagnostics suffered from a data breach that exposed 350,000 patients' protected health information. Before the attacker may have acquired or exfiltrated specific patient health information, the security team discovered the intrusion two days after the ransomware was distributed. The compromised data includes medical histories, test reports, CPT and diagnosis codes, and other data provided, as well as billing and further health data. The Quest investigated the incident and notified those affected by email. | |||||||
Quest Diagnostics Company Subsidiaries
Quest Diagnostics (NYSE: DGX) empowers people to take action to improve health outcomes. Derived from the world's largest database of clinical lab results, our diagnostic insights reveal new avenues to identify and treat disease, inspire healthy behaviors and improve health care management. Quest annually serves one in three adult Americans and half the physicians and hospitals in the United States, and our 47,000 employees understand that, in the right hands and with the right context, our diagnostic insights can inspire actions that transform lives. The company offers physicians the broadest test menu (3,000+ tests), is a pioneer in developing innovative new tests, is the leader in cancer diagnostics, provides anatomic pathology (AP) services, & interpretive consultation through its medical & scientific staff of about 900 M.D.s & Ph.D.s. The company reported 2020 revenues of $9.44 billion. Quest Diagnostics offers the most extensive clinical testing network in the U.S., with laboratories in most major metropolitan areas, & in Mexico, the UK & India. The company also operates four esoteric laboratories, 40 outpatient AP laboratories, & 160 smaller, rapid-response laboratories. Patients may have specimens collected in any of the companyโs approximately 2,250 patient service centers. On a typical workday, testing is performed for about 550,000 patients. Quest Diagnostics empowers healthcare organizations & clinicians with state-of-the-art connectivity solutions. The company is the leading provider of pre-employment drugs-of-abuse screening for employers & risk assessment services for the life insurance industry. It is the worldโs 2nd largest provider of clinical trials testing for new pharmaceuticals. More information is available at www.questdiagnostics.com. Language Assistance / Non-Discrimination Notice Asistencia de Idiomas / Aviso de no Discriminaciรณn ่ช่จๅๅฉ / ไธๆญง่ฆ้็ฅ www.QuestDiagnostics.com/home/nondiscrimination
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Quest Diagnostics Cyber Security News
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Quest Diagnostics Similar Companies
Quest Diagnostics
Quest Diagnostics (NYSE: DGX) empowers people to take action to improve health outcomes. Derived from the world's largest database of clinical lab results, our diagnostic insights reveal new avenues to identify and treat disease, inspire healthy behaviors and improve health care management. Quest
Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
Quest Diagnostics CyberSecurity History Information
How many cyber incidents has Quest Diagnostics faced?
Total Incidents: According to Rankiteo, Quest Diagnostics has faced 5 incidents in the past.
What types of cybersecurity incidents have occurred at Quest Diagnostics?
Incident Types: The types of cybersecurity incidents that have occurred include Breach and Ransomware.
How does Quest Diagnostics detect and respond to cybersecurity incidents?
Detection and Response: The company detects and responds to cybersecurity incidents through an communication strategy with notified those affected by email.
Incident Details
Can you provide details on each incident?
Incident : Data Breach
Title: Quest Diagnostics Data Breach
Description: The Maine Office of the Attorney General reported a data breach involving Quest Diagnostics on October 25, 2024. The breach, which was discovered on August 27, 2024, involved inadvertent disclosure of personal information and affected a total of 1,062 individuals, including 4 residents of Maine.
Date Detected: 2024-08-27
Date Publicly Disclosed: 2024-10-25
Type: Data Breach
Incident : Data Breach
Title: Quest Diagnostics Data Breach
Description: An employee mistakenly sent personal information via secured email to outside parties.
Date Detected: 2014-11-17
Date Publicly Disclosed: 2014-12-19
Type: Data Breach
Attack Vector: Human Error
Vulnerability Exploited: Email Misconfiguration
Incident : Data Breach
Title: Quest Diagnostics Data Breach
Description: The California Office of the Attorney General reported a data breach involving Quest Diagnostics on December 12, 2016. The breach occurred on November 26, 2016, when an unauthorized third party accessed the MyQuest by Care360ยฎ internet application, compromising Protected Health Information (PHI) of approximately 34,000 patients, which included names, dates of birth, and lab results.
Date Detected: 2016-11-26
Date Publicly Disclosed: 2016-12-12
Type: Data Breach
Attack Vector: Unauthorized Access
Threat Actor: Unauthorized Third Party
Incident : Data Breach
Title: Quest Diagnostics Data Breach
Description: The California Office of the Attorney General reported a data breach involving Quest Diagnostics on November 16, 2021. The breach occurred on October 29, 2021, due to an inadvertent email sent containing a spreadsheet with personal information of current and former employees. The information included names, Social Security Numbers, and employee ID numbers, with some individuals potentially having personal email addresses compromised.
Date Detected: 2021-10-29
Date Publicly Disclosed: 2021-11-16
Type: Data Breach
Attack Vector: Inadvertent Email
Incident : Data Breach
Title: Quest Diagnostics Data Breach
Description: Quest Diagnostics suffered from a data breach that exposed 350,000 patients' protected health information. The security team discovered the intrusion two days after the ransomware was distributed. The compromised data includes medical histories, test reports, CPT and diagnosis codes, and other data provided, as well as billing and further health data. Quest investigated the incident and notified those affected by email.
Type: Data Breach
Attack Vector: Ransomware
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.
Impact of the Incidents
What was the impact of each incident?
Incident : Data Breach QUE257072725
Data Compromised: Personal Information
Incident : Data Breach QUE523072725
Data Compromised: names, addresses, Social Security numbers, dates of birth
Incident : Data Breach QUE238072625
Data Compromised: Names, Dates of Birth, Lab Results
Systems Affected: MyQuest by Care360ยฎ internet application
Incident : Data Breach QUE049072425
Data Compromised: Names, Social Security Numbers, Employee ID Numbers, Personal Email Addresses
Incident : Data Breach QUE93731122
Data Compromised: medical histories, test reports, CPT and diagnosis codes, billing and further health data
What types of data are most commonly compromised in incidents?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Personal Information, names, addresses, Social Security numbers, dates of birth, Protected Health Information (PHI), Names, Social Security Numbers, Employee ID Numbers, Personal Email Addresses, medical histories, test reports, CPT and diagnosis codes and billing and further health data.
Which entities were affected by each incident?
Incident : Data Breach QUE257072725
Entity Type: Healthcare
Industry: Healthcare
Customers Affected: 1062
Incident : Data Breach QUE523072725
Entity Type: Healthcare
Industry: Healthcare
Customers Affected: 34000
Incident : Data Breach QUE238072625
Entity Type: Healthcare
Industry: Healthcare
Customers Affected: 34000
Incident : Data Breach QUE93731122
Entity Type: Company
Industry: Healthcare
Customers Affected: 350,000
Response to the Incidents
What measures were taken in response to each incident?
Incident : Data Breach QUE93731122
Communication Strategy: Notified those affected by email
Data Breach Information
What type of data was compromised in each breach?
Incident : Data Breach QUE257072725
Type of Data Compromised: Personal Information
Number of Records Exposed: 1062
Incident : Data Breach QUE523072725
Type of Data Compromised: names, addresses, Social Security numbers, dates of birth
Number of Records Exposed: 34000
Sensitivity of Data: High
Personally Identifiable Information: True
Incident : Data Breach QUE238072625
Type of Data Compromised: Protected Health Information (PHI)
Number of Records Exposed: 34000
Sensitivity of Data: High
Personally Identifiable Information: Names, Dates of Birth
Incident : Data Breach QUE049072425
Type of Data Compromised: Names, Social Security Numbers, Employee ID Numbers, Personal Email Addresses
Sensitivity of Data: High
File Types Exposed: Spreadsheet
Personally Identifiable Information: True
Incident : Data Breach QUE93731122
Type of Data Compromised: medical histories, test reports, CPT and diagnosis codes, billing and further health data
Number of Records Exposed: 350,000
References
Where can I find more information about each incident?
Incident : Data Breach QUE257072725
Source: Maine Office of the Attorney General
Date Accessed: 2024-10-25
Incident : Data Breach QUE523072725
Source: California Office of the Attorney General
Incident : Data Breach QUE238072625
Source: California Office of the Attorney General
Date Accessed: 2016-12-12
Incident : Data Breach QUE049072425
Source: California Office of the Attorney General
Date Accessed: 2021-11-16
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: 2024-10-25, and Source: California Office of the Attorney General, and Source: California Office of the Attorney GeneralDate Accessed: 2016-12-12, and Source: California Office of the Attorney GeneralDate Accessed: 2021-11-16.
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 was Notified those affected by email.
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 Unauthorized Third Party.
Incident Details
What was the most recent incident detected?
Most Recent Incident Detected: The most recent incident detected was on 2024-08-27.
What was the most recent incident publicly disclosed?
Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on 2024-10-25.
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 Personal Information, names, addresses, Social Security numbers, dates of birth, Names, Dates of Birth, Lab Results, Names, Social Security Numbers, Employee ID Numbers, Personal Email Addresses, medical histories, test reports, CPT and diagnosis codes and billing and further health data.
What was the most significant system affected in an incident?
Most Significant System Affected: The most significant system affected in an incident was MyQuest by Care360ยฎ internet application.
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 were Personal Information, names, addresses, Social Security numbers, dates of birth, Names, Dates of Birth, Lab Results, Names, Social Security Numbers, Employee ID Numbers, Personal Email Addresses, medical histories, test reports, CPT and diagnosis codes and billing and further health data.
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 350.8K.
References
What is the most recent source of information about an incident?
Most Recent Source: The most recent source of information about an incident are Maine Office of the Attorney General, California Office of the Attorney General, California Office of the Attorney General and California Office of the Attorney General.
What Do We Measure?
Every week, Rankiteo analyzes billions of signals to give organizations a sharper, faster view of emerging risks. With deeper, more actionable intelligence at their fingertips, security teams can outpace threat actors, respond instantly to Zero-Day attacks, and dramatically shrink their risk exposure window.
These are some of the factors we use to calculate the overall score:
Identify exposed access points, detect misconfigured SSL certificates, and uncover vulnerabilities across the network infrastructure.
Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.
Monitor and manage all IT assets and their configurations to ensure accurate, real-time visibility across the company's technology environment.
Leverage real-time insights on active threats, malware campaigns, and emerging vulnerabilities to proactively defend against evolving cyberattacks.
