Kaiser Permanente Vendor Cyber Rating & Cyber Score

kp.org
ISOSOC2 Type 1SOC2 Type 2PCI DSSHIPAAGDPR

At the heart of health care, you’ll find Kaiser Permanente. As the nation’s leading not-for-profit, integrated health plan, we make a difference in the lives of members, patients, and communities across the country. With 39 hospitals and more than 734 locations in eight states and the District of Columbia, we proudly serve more than 12.7 million members from coast to coast. Whether you choose to join a hospital in the Northwest, a clinic in Southern California, or a medical office in the Mid-Atlantic, we have many opportunities for you to shape the future of care. Our teams are empowered to advance impactful and extraordinary care for all by pioneering health outcomes, encouraging diverse viewpoints, and creating new opportunities for learning and advancement. This covers more than our members and our employees; it also reaches far into our communities. Together, we’re proudly working as one for a healthier today and tomorrow. *Disclaimer: Please do not include any medical, personal, or confidential information in your comments. Comments are encouraged; however, Kaiser Permanente reserves the right to moderate comments on this page as necessary to prevent medical, personal, and confidential information from being posted on this site. In addition, Kaiser Permanente will remove all spam, personal attacks, profanity, and off-topic commentary. Comments containing advertisements about goods or services or announcements about news or events that are not related to Kaiser Permanente will be removed. Please note that your communications with Kaiser Permanente through this page are informal and are not part of Kaiser Permanente’s formal grievance process for members. To get information about the member grievance process or to submit a grievance, go to http://k-p.li/2aToRTn

Kaiser Permanente A.I CyberSecurity Scoring

Kaiser Permanente

Company Details

Linkedin ID:

kaiser-permanente

Website:

http://kp.org

Employees number:

133,680

Number of followers:

1,049,900

NAICS:

62

Industry Type:

Hospitals and Health Care

Homepage:

kp.org

IP Addresses:

914

Company ID:

KAI_2204060

Scan Status:

In-progress

AI scoreKaiser Permanente Risk Score (AI oriented)

Between 0 and 549

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Kaiser Permanente Hospitals and Health Care
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globalscoreKaiser Permanente Global Score (TPRM)

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Kaiser Permanente Hospitals and Health Care
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Kaiser Permanente

Critical
Current Score
192
C (Critical)
01000
17 incidents
-143.0 avg impact

Incident timeline with MITRE ATT&CK tactics, techniques, and mitigations.

MARCH 2026
188
FEBRUARY 2026
186
JANUARY 2026
316
Breach
12 Jan 2026 • Kaiser Permanente: Kaiser Permanente to pay $46 million in privacy data breach settlement. Here’s how to file a claim.
Kaiser Permanente Patient Data Breach Settlement

**Kaiser Permanente Settles $46M Lawsuit Over Patient Data Exposure via Tracking Tools** Kaiser Permanente has agreed to a $46 million settlement to resolve a class-action lawsuit alleging unauthorized sharing of patient data through third-party tracking tools on its websites and mobile apps. The settlement, preliminarily approved in December 2025, covers approximately 13 million current and former members across nine states and the District of Columbia. The lawsuit, consolidated from multiple filings in 2024, claimed that from November 2017 to May 2024, Kaiser’s digital platforms transmitted sensitive information including IP addresses, names, medical histories, and user navigation details to companies like Google, Microsoft, Meta, and Twitter/X without explicit consent. Kaiser denied any misuse of data or exposure of Social Security numbers or financial information but opted to settle to avoid prolonged litigation. Eligible members, who accessed Kaiser’s websites or apps during the affected period, may receive a one-time payment of $20 to $40 from the settlement fund, which could increase to $47.5 million. Claims must be filed by March 12, 2026, via the settlement website, with payments distributed after final court approval on May 7, 2026. Payouts will be issued electronically or by check. Kaiser stated it removed the tracking technologies in 2024 and implemented additional safeguards to prevent future incidents. The company maintains no evidence of data misuse but emphasized the settlement as a resolution to legal uncertainty.

173
critical -143
KAI1768267117
Incident Details -
Type
Data Breach
Attack Vector
Third-party tracking code
Vulnerability Exploited
Unauthorized data transmission via third-party trackers
Impact
Financial Loss: $46 million (settlement fund) Data Compromised: Confidential personal and health information, including IP addresses, names, search terms, medical histories, communications with healthcare professionals, and navigation details Systems Affected: Kaiser Permanente websites and mobile applications Operational Impact: Removal of certain online technologies and implementation of additional safeguards Brand Reputation Impact: Potential reputational damage due to alleged data breach Legal Liabilities: Class-action lawsuit settlement Identity Theft Risk: Potential risk due to exposure of personal and health information
Response
Third Party Assistance: Experts consulted for additional safeguards Containment Measures: Removal of certain online technologies from websites and mobile applications Remediation Measures: Implementation of additional measures to safeguard against recurrence Communication Strategy: Notices sent to members in 2024 and settlement notices in 2025
Data Breach
Personal information Health information Sensitivity Of Data: High (medical histories, communications with healthcare professionals) Data Exfiltration: Transmitted to third parties (Google, Microsoft, Meta, Twitter/X) IP addresses Names Search terms Medical histories Navigation details
Regulatory Compliance
Legal Actions: Class-action lawsuit settlement
Lessons Learned
Need for stricter oversight of third-party tracking technologies and enhanced data protection measures
Recommendations
Remove unauthorized third-party tracking code, implement expert-guided safeguards, and ensure compliance with data privacy regulations
Investigation Status
Settled
Customer Advisories
Members informed in 2024 and 2025 about the breach and settlement
Stakeholder Advisories
Settlement notices sent to members
Post Incident Analysis
Root Causes: Unauthorized transmission of data via third-party tracking code Corrective Actions: Removal of tracking technologies and implementation of additional safeguards
References
Blog URL Source URL
DECEMBER 2025
344
NOVEMBER 2025
304
OCTOBER 2025
295
SEPTEMBER 2025
286
AUGUST 2025
277
JULY 2025
268
JUNE 2025
258
MAY 2025
248
APRIL 2025
238
AUGUST 2024
200
Breach
02 Aug 2024 • Kaiser Foundation Hospitals
Kaiser Foundation Hospitals Data Breach

The California Office of the Attorney General reported that Kaiser Foundation Hospitals experienced a data breach on August 2, 2024, which was discovered on September 3, 2024. Unauthorized access occurred to the email accounts of two workforce members, potentially exposing protected health information of individuals. The number of individuals affected is not specified.

142
high -58
KAI603072625
Incident Details -
Type
Data Breach
Attack Vector
Email Account Compromise
Impact
Data Compromised: Protected Health Information Systems Affected: Email Accounts
Data Breach
Type Of Data Compromised: Protected Health Information Sensitivity Of Data: High
References
Blog URL Source URL
JUNE 2024
290
Breach
16 Jun 2024 • Kaiser Permanente
Kaiser Permanente Data Breach

Kaiser Permanente, a leading healthcare organization, has reported a significant data breach affecting 13.4 million members, marking it as the largest healthcare-related data breach of 2024. The compromised information includes names, IP addresses, account interaction details, and navigational data on Kaiser's websites and mobile apps. The breach resulted from tracking code that shared data with third-party advertisers, including major tech companies like Google, Microsoft, and X (formerly Twitter). This incident has raised privacy concerns and prompted Kaiser to remove the tracking code and notify the affected individuals.

184
critical -106
KAI004032225
Incident Details -
Type
Data Breach
Attack Vector
Unauthorized data sharing through tracking code
Vulnerability Exploited
Tracking code sharing data with third-party advertisers
Impact
Names IP addresses Account interaction details Navigational data Websites Mobile apps
Response
Removed the tracking code Notified affected individuals
Data Breach
Names IP addresses Account interaction details Navigational data Number Of Records Exposed: 13.4 million Names IP addresses
References
Blog URL Source URL
MAY 2024
473
Breach
01 May 2024 • Kaiser Permanente: Kaiser Permanente to pay $46 million in privacy data breach settlement. Here's how to file a claim.
Kaiser Permanente Patient Data Breach Settlement

**Kaiser Permanente Settles $46M Lawsuit Over Alleged Patient Data Breaches** Kaiser Permanente has agreed to a $46 million settlement to resolve a class-action lawsuit alleging unauthorized sharing of patient data through its websites and mobile apps. The settlement, preliminarily approved in December 2025, stems from multiple lawsuits filed in 2024, which were consolidated into a single case. The lawsuit claimed that from November 2017 to May 2024, Kaiser’s digital platforms used third-party tracking tools including code from Google, Microsoft, Meta, and Twitter/X that transmitted sensitive information without user consent. Exposed data reportedly included IP addresses, names, medical histories, search terms, and user navigation details. Kaiser denied any misuse of data or exposure of Social Security numbers or financial information, stating the settlement was reached to avoid prolonged litigation. Eligible members current or former Kaiser patients in nine states and D.C. who accessed its websites or apps during the affected period may receive a one-time payment of $20 to $40 from the settlement fund, which could increase to $47.5 million. Claims must be filed by March 12, 2026, via the settlement website, with payments distributed after final court approval on May 7, 2026. Payouts will be issued electronically or by check. Kaiser stated it removed the tracking technologies in 2024 and implemented additional safeguards to prevent future incidents. The company maintains no evidence of data misuse but settled to resolve the legal dispute.

330
critical -143
KAI1768267006
Incident Details -
Type
Data Breach
Attack Vector
Third-party tracking code
Vulnerability Exploited
Unauthorized data transmission via third-party integrations
Impact
Financial Loss: $46 million (settlement fund) Data Compromised: Confidential personal and health information, including IP addresses, names, search terms, medical histories, communications with healthcare professionals, and site navigation details Websites Mobile applications Operational Impact: Removal of certain online technologies and implementation of additional safeguards Brand Reputation Impact: Potential reputational damage due to alleged data breach Legal Liabilities: Class-action lawsuit settlement Payment Information Risk: Denied exposure of financial information
Response
Third Party Assistance: Guidance of experts Containment Measures: Removal of certain online technologies from websites and mobile applications Remediation Measures: Implementation of additional safeguards to prevent recurrence Communication Strategy: Informed members in 2024; official settlement notices sent in 2025
Data Breach
Personal information Health information Sensitivity Of Data: High (medical histories, communications with healthcare professionals) Data Exfiltration: Transmitted to third parties (Google, Microsoft, Meta, Twitter/X) IP addresses Names Search terms Medical histories Site navigation details
Regulatory Compliance
Legal Actions: Class-action lawsuit settlement
Lessons Learned
Importance of securing third-party integrations and ensuring explicit user consent for data sharing
Recommendations
Enhance monitoring of third-party tracking technologies, implement stricter data sharing policies, and conduct regular audits of data transmission practices
Investigation Status
Settled
Customer Advisories
Official settlement notices sent to members in 2025; members informed in 2024 about technology removal
Post Incident Analysis
Root Causes: Unauthorized transmission of data via third-party tracking code without member consent Corrective Actions: Removal of tracking technologies, implementation of additional safeguards, and expert guidance
References
Blog URL Source URL
OCTOBER 2023
436
Breach
25 Oct 2023 • Kaiser Foundation Health Plan, Inc.
Data Breach at Kaiser Foundation Health Plan, Inc.

The California Office of the Attorney General reported a data breach involving Kaiser Foundation Health Plan, Inc. on April 12, 2024. The incident occurred on October 25, 2023, when certain online technologies potentially transmitted personal information such as IP addresses and names to third-party vendors. Detailed information like Social Security numbers and financial information was not involved.

378
low -58
KAI842072625
Incident Details -
Type
Data Breach
Attack Vector
Online Technologies
Impact
IP addresses names
Data Breach
IP addresses names Sensitivity Of Data: Low IP addresses names
References
Blog URL Source URL
SEPTEMBER 2022
414
Data Leak
01 Sep 2022 • Kaiser Permanente
Improper Access to Health Information at Kaiser Foundation Health Plan of the Mid-Atlantic States

Kaiser Foundation Health Plan of the Mid-Atlantic States notified 8,556 individuals of improper access to their health information. In September 2022, Kaiser Permanente determined that an employee had inappropriately accessed medical records without a legitimate reason for doing so. The employee viewed a variety of information, including names, medical record numbers, phone numbers, birth dates, addresses, medical information, and photographs.

340
critical -74
KAI184191222
Incident Details -
Type
Data Breach
Attack Vector
Insider Threat
Vulnerability Exploited
Improper Access Controls
Motivation
Unauthorized Access
Impact
Names Medical Record Numbers Phone Numbers Birth Dates Addresses Medical Information Photographs
Data Breach
Names Medical Record Numbers Phone Numbers Birth Dates Addresses Medical Information Photographs Sensitivity Of Data: High Names Medical Record Numbers Phone Numbers Birth Dates Addresses Photographs
References
Blog URL Source URL
MAY 2022
449
Breach
20 May 2022 • Kaiser Foundation Health Plan, Inc.
Kaiser Permanente Data Breach

The California Office of the Attorney General reported on July 15, 2022, that Kaiser Permanente experienced a data breach on May 20, 2022, involving the theft of an iPad from a medical center. The breach potentially affected individuals' first names, last names, medical record numbers, dates of birth, and service dates. The breach response included notifying law enforcement and remotely erasing the iPad's data.

391
high -58
KAI703072925
Incident Details -
Type
Data Breach
Attack Vector
Theft of Device
Impact
first names last names medical record numbers dates of birth service dates
Response
remotely erasing the iPad's data
Data Breach
Personally Identifiable Information Sensitivity Of Data: High
References
Blog URL Source URL
APRIL 2022
519
Breach
01 Apr 2022 • Kaiser Permanente
Unauthorized Access to Kaiser Permanente's Email System

Unauthorized access to the US healthcare giant Kaiser Permanente's email system exposed the healthcare and personal information of up to 70,000 patients. The breach exposed patients’ first and last names, medical record numbers, dates of service, and laboratory test result information of the health plan provider. Kaiser Permanente asked all of its employees to reset their passwords for their email accounts and arranged additional training on safe email practices for all its staff.

440
critical -79
KAI12717622
Incident Details -
Type
Data Breach
Attack Vector
Unauthorized Access
Impact
first and last names medical record numbers dates of service laboratory test result information email system
Response
Password reset for all employees Additional training on safe email practices
Data Breach
Healthcare Information Personal Information first and last names medical record numbers dates of service laboratory test result information
References
Blog URL Source URL
SEPTEMBER 2021
582
Ransomware
01 Sep 2021 • TTEC
Ransomware Attack on TTEC

The systems of TTEC were affected by ransomware attack by the Ragnar Locker group on its servers. The outage impacted the access to the network, applications and customer support. The attackers gained the access to the systems and left messages on its syetmes asking for ransom.

486
critical -96
TTE16021322
Incident Details -
Type
Ransomware
Attack Vector
Unspecified
Motivation
Financial
Impact
Network Applications Customer Support
References
Blog URL Source URL
OCTOBER 2019
545
Breach
06 Oct 2019 • Kaiser Health Plan, Southern California
Data Breach at Kaiser Health Plan, Southern California

The California Office of the Attorney General reported a data breach involving Kaiser Health Plan, Southern California, on February 28, 2020. The breach occurred when a former address was incorrectly used for mailings to individuals between October 6 and December 20, 2019, potentially affecting demographic and medical information. The specific number of individuals affected is currently unknown.

487
high -58
KAI941080425
Incident Details -
Type
Data Breach
Attack Vector
Incorrect Address Usage
Vulnerability Exploited
Incorrect Address Usage
Impact
Demographic Information Medical Information
Data Breach
Demographic Information Medical Information Sensitivity Of Data: High Personally Identifiable Information: Yes
References
Blog URL Source URL
AUGUST 2019
596
Breach
12 Aug 2019 • Kaiser Permanente
Kaiser Permanente Data Breach

The California Office of the Attorney General reported a data breach involving Kaiser Permanente on September 26, 2019. The breach occurred on August 12, 2019, when a provider’s email account containing protected health information was compromised for approximately thirteen hours. The types of information potentially exposed included names, medical record numbers, and various health-related details, but Social Security numbers and financial information were not involved.

538
high -58
KAI228072525
Incident Details -
Type
Data Breach
Attack Vector
Email Compromise
Impact
names medical record numbers health-related details
Data Breach
names medical record numbers health-related details Sensitivity Of Data: High names medical record numbers
Initial Access Broker
Entry Point: Email Compromise
References
Blog URL Source URL
NOVEMBER 2017
574
Breach
02 Nov 2017 • Kaiser Foundation Health Plan, Inc.
Kaiser Foundation Health Plan, Inc. Data Breach (2017)

On November 2, 2017, Kaiser Foundation Health Plan, Inc. experienced a data breach reported by the California Office of the Attorney General on December 5, 2017. The incident involved the unauthorized compromise of **personal health information (PHI)**, though the exact number of affected individuals remains undisclosed. The breach exposed sensitive medical and personally identifiable data, posing risks such as identity theft, financial fraud, or misuse of health records. Given the nature of the compromised information—health data—this incident carries severe implications for patient privacy, trust in the healthcare provider, and potential regulatory penalties under laws like **HIPAA (Health Insurance Portability and Accountability Act)**. The lack of clarity on the scale of the breach further complicates mitigation efforts, leaving affected individuals vulnerable to long-term consequences. Healthcare breaches of this nature often trigger investigations by regulatory bodies, legal repercussions, and reputational damage that can erode patient confidence. The exposure of PHI also heightens the risk of targeted phishing attacks or blackmail, particularly if the data includes diagnoses, treatment histories, or insurance details. Kaiser’s response—including notification protocols, remediation measures, and transparency—would be critical in determining the long-term impact on its operations and public perception.

516
critical -58
KAI502082925
Incident Details -
Type
Data Breach
Impact
Personal Health Information
Data Breach
Personal Health Information Number Of Records Exposed: Unknown Sensitivity Of Data: High
Regulatory Compliance
California Office of the Attorney General
References
Blog URL Source URL
AUGUST 2017
622
Breach
09 Aug 2017 • Kaiser Foundation Health Plan
Kaiser Foundation Health Plan Data Breach (2017)

On August 9, 2017, Kaiser Foundation Health Plan experienced a data breach when an employee inadvertently emailed a document containing **protected health information (PHI)** to an **unknown external address**. The incident was reported to the **California Office of the Attorney General** on August 31, 2017. The breach involved the unauthorized disclosure of sensitive patient data, though the exact number of affected individuals was not specified. The exposed information likely included **medical records, personal identifiers, or treatment details**, posing risks such as **identity theft, fraud, or reputational harm** to the impacted patients. As a healthcare provider, Kaiser’s breach underscores vulnerabilities in **internal data-handling protocols**, particularly in securing PHI against accidental leaks. The incident did not involve ransomware or a targeted cyber attack but stemmed from **human error**, highlighting the need for stricter email security measures and employee training to prevent similar occurrences in the future.

564
high -58
KAI557091725
Incident Details -
Type
Data Breach
Attack Vector
Human Error (Misaddressed Email)
Impact
Brand Reputation Impact: Potential (Healthcare Data Exposure) Identity Theft Risk: Potential (Protected Health Information)
Response
Communication Strategy: Public Disclosure via California AG Office
Data Breach
Type Of Data Compromised: Protected Health Information (PHI) Number Of Records Exposed: Unspecified Sensitivity Of Data: High (Health Data)
Regulatory Compliance
HIPAA (Potential) California Data Breach Notification Law Regulatory Notifications: California Office of the Attorney General
Post Incident Analysis
Root Causes: Human Error (Email Misdirection)
References
Blog URL Source URL
NOVEMBER 2016
656
Breach
16 Nov 2016 • Kaiser Foundation Hospitals
Data Breach at Kaiser Foundation Hospitals

The California Office of the Attorney General reported a data breach involving Kaiser Foundation Hospitals on December 20, 2016. The breach, which occurred due to a system error between November 16 and 28, 2016, potentially exposed individuals' names, ages, addresses, copay information, deductible payments, and out-of-pocket expenses. The number of individuals affected is currently unknown.

598
medium -58
KAI928072525
Incident Details -
Type
Data Breach
Attack Vector
System Error
Impact
names ages addresses copay information deductible payments out-of-pocket expenses
Data Breach
names ages addresses copay information deductible payments out-of-pocket expenses names ages addresses
References
Blog URL Source URL
OCTOBER 2016
712
Breach
12 Oct 2016 • Kaiser Permanente Health Plan, Inc.
Kaiser Permanente Health Plan Data Breach

The California Office of the Attorney General reported that Kaiser Permanente Health Plan, Inc of Northern California experienced a data breach on November 7, 2016, related to an accidental exposure of protected health information on October 12-13, 2016. The breach allowed member information accessed via kp.org to be mistakenly viewable by other visitors for approximately two hours, although no Social Security numbers or banking information were compromised.

654
low -58
KAI406072625
Incident Details -
Type
Data Breach
Attack Vector
Accidental Exposure
Vulnerability Exploited
Misconfiguration
Impact
Data Compromised: Member Information Systems Affected: kp.org
Data Breach
Type Of Data Compromised: Protected Health Information Sensitivity Of Data: High Personally Identifiable Information: Member Information
References
Blog URL Source URL
AUGUST 2012
701
Breach
24 Aug 2012 • Kaiser Permanente
Kaiser Permanente Data Breach

The California Office of the Attorney General reported a data breach involving Kaiser Permanente on October 29, 2012. The breach occurred on August 24, 2012, when an employee mistakenly emailed confidential employee information, including names and Social Security numbers, to an unauthorized recipient. The number of individuals affected is not specified, but the report states that no personal health information was involved.

643
high -58
KAI654072925
Incident Details -
Type
Data Breach
Attack Vector
Human Error
Vulnerability Exploited
Email Misconfiguration
Motivation
Accidental
Impact
Names Social Security Numbers
Data Breach
Names Social Security Numbers Sensitivity Of Data: High
Post Incident Analysis
Root Causes: Human Error
References
Blog URL Source URL
APRIL 2012
761
Breach
06 Apr 2012 • Kaiser Permanente
Kaiser Permanente Data Breach

The California Office of the Attorney General reported that Kaiser Permanente experienced a data breach on April 6, 2012, due to an employee inadvertently sending a report to a non-Kaiser Permanente email address. The reported date of the incident is April 16, 2012. The incident potentially affected patient identifiable information, although the number of individuals affected is unknown.

697
critical -64
KAI529072625
Incident Details -
Type
Data Breach
Attack Vector
Human Error
Vulnerability Exploited
Email Misdirection
Impact
Data Compromised: Patient Identifiable Information
Data Breach
Type Of Data Compromised: Patient Identifiable Information
References
Blog URL Source URL

Frequently Asked Questions

According to Rankiteo, the current A.I.-based Cyber Score for Kaiser Permanente is 192, which corresponds to a Critical rating.

According to Rankiteo, the A.I. Rankiteo Cyber Score for February 2026 was 186.

According to Rankiteo, the A.I. Rankiteo Cyber Score for January 2026 was 316.

According to Rankiteo, the A.I. Rankiteo Cyber Score for December 2025 was 344.

According to Rankiteo, the A.I. Rankiteo Cyber Score for November 2025 was 304.

According to Rankiteo, the A.I. Rankiteo Cyber Score for October 2025 was 295.

According to Rankiteo, the A.I. Rankiteo Cyber Score for September 2025 was 286.

According to Rankiteo, the A.I. Rankiteo Cyber Score for August 2025 was 277.

According to Rankiteo, the A.I. Rankiteo Cyber Score for July 2025 was 268.

According to Rankiteo, the A.I. Rankiteo Cyber Score for June 2025 was 258.

According to Rankiteo, the A.I. Rankiteo Cyber Score for May 2025 was 248.

According to Rankiteo, the A.I. Rankiteo Cyber Score for April 2025 was 238.

Over the past 12 months, the average per-incident point impact on Kaiser Permanente’s A.I Rankiteo Cyber Score has been -143.0 points.

You can access Kaiser Permanente’s cyber incident details on Rankiteo by visiting the following link: https://www.rankiteo.com/company/kaiser-permanente.

You can find the summary of the A.I Rankiteo Risk Scoring methodology on Rankiteo by visiting the following link: Rankiteo Algorithm.

You can view Kaiser Permanente’s profile page on Rankiteo by visiting the following link: https://www.rankiteo.com/company/kaiser-permanente.

With scores of 18.5/20 from OpenAI ChatGPT, 20/20 from Mistral AI, and 17/20 from Claude AI, the A.I. Rankiteo Risk Scoring methodology is validated as a market leader.