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MassMutual Vendor Cyber Rating & Cyber Score

Q: What is the current A.I Rankiteo Cyber Score for MassMutual ?

According to Rankiteo, the current A.I.-based Cyber Score for MassMutual is 615, which corresponds to a Poor rating.

Q: What was MassMutual's A.I Rankiteo Cyber Score in June 2026 ?

According to Rankiteo, the A.I. Rankiteo Cyber Score for June 2026 was 624.

Q: What was MassMutual's A.I Rankiteo Cyber Score in May 2026 ?

According to Rankiteo, the A.I. Rankiteo Cyber Score for May 2026 was 619.

Q: What was MassMutual's A.I Rankiteo Cyber Score in April 2026 ?

According to Rankiteo, the A.I. Rankiteo Cyber Score for April 2026 was 617.

Q: What was MassMutual's A.I Rankiteo Cyber Score in March 2026 ?

According to Rankiteo, the A.I. Rankiteo Cyber Score for March 2026 was 613.

Q: What was MassMutual's A.I Rankiteo Cyber Score in February 2026 ?

According to Rankiteo, the A.I. Rankiteo Cyber Score for February 2026 was 612.

Q: What was MassMutual's A.I Rankiteo Cyber Score in January 2026 ?

According to Rankiteo, the A.I. Rankiteo Cyber Score for January 2026 was 609.

Q: What was MassMutual's A.I Rankiteo Cyber Score in December 2025 ?

According to Rankiteo, the A.I. Rankiteo Cyber Score for December 2025 was 606.

Q: What was MassMutual's A.I Rankiteo Cyber Score in November 2025 ?

According to Rankiteo, the A.I. Rankiteo Cyber Score for November 2025 was 602.

Q: What was MassMutual's A.I Rankiteo Cyber Score in October 2025 ?

According to Rankiteo, the A.I. Rankiteo Cyber Score for October 2025 was 599.

MassMutual.com

Add Your Compliance Badge

Living mutual has always been at the core of our human existence, and it's the principle that's guided us since our founding in 1851. It's not a concept we invented, but one we champion for the simple reason that people take it for granted today. While the world would have us strive for independence, the truth is when we depend on one another, we aren't just more secure - life is happier and more fulfilling. So as we celebrate our new identity, we're reminding everyone that who we are stays the same. Learn more at: www.MassMutual.com Disclosures about MassMutual’s LinkedIn Company Page and other social media sites are located at: https://www.massmutual.com/social-media-guidelines. CRN201905-212768

MassMutual A.I CyberSecurity Scoring

Incident Details

MassMutual

Data Breach at Massachusetts Mutual Life Insurance Company

524

HIGH-68

MAS1026070925

The Massachusetts Office of Consumer Affairs and Business Regulation reported a data breach involving Massachusetts Mutual Life Insurance Company (MassMutual) on April 26, 2024. The breach affected 309 residents, compromising Social Security Numbers (SSN) and medical records.

INCIDENT DETAILS -

TYPE

Data Breach

IMPACT

Social Security Numbers (SSN)medical records

DATA BREACH

Social Security Numbers (SSN)medical recordsSensitivity Of Data: High

REFERENCES

Blog URL Source URL

MAY 2023

611

Breach

29 May 2023 • MassMutual

Massachusetts Mutual Life Company

MassMutual Data Breach

548

CRITICAL-63

MAS654072525

On July 19, 2023, the Maine Attorney General's Office reported a data breach involving Massachusetts Mutual Life Company (MassMutual) that affected two Maine residents. The breach occurred on May 29 and May 30, 2023, when a threat actor exploited a zero-day vulnerability in Pension Benefit Information, LLC's MOVEit Transfer software, potentially exposing names, partial mailing addresses, Social Security numbers, and dates of birth of the affected individuals.

INCIDENT DETAILS -

TYPE

Data Breach

IMPACT

namespartial mailing addressesSocial Security numbersdates of birth

DATA BREACH

namespartial mailing addressesSocial Security numbersdates of birthSensitivity Of Data: High

REFERENCES

Blog URL Source URL

FEBRUARY 2023

661

Breach

01 Feb 2023 • MassMutual

Massachusetts Mutual Life Insurance Company

MassMutual Data Breach

598

HIGH-63

MAS701072625

The California Office of the Attorney General reported that Massachusetts Mutual Life Insurance Company (MassMutual) experienced a data breach involving unauthorized access to an employee's online account on February 1, 2023. Notification was made on April 27, 2023, but the number of affected individuals and specific types of personal information exposed are currently unknown.

INCIDENT DETAILS -

TYPE

Data Breach

REFERENCES

Blog URL Source URL

OCTOBER 2022

723

Breach

01 Oct 2022 • MassMutual

MassMutual

MassMutual Data Breach

651

CRITICAL-72

MAS222931122

Massachusetts Mutual Life Insurance Company suffered a data breach after an unauthorized party gained access to sensitive consumer information that had been entrusted to the company. The breach exposed the names, addresses, Social Security numbers, driver’s license numbers, state identification numbers, and financial account information belonging to certain individuals including 1,472 Texas residents. The attack might have affected a large number of U.S. citizens as MassMutual does business throughout the country. However, the company sent the breach notice to the affected parties.

INCIDENT DETAILS -

TYPE

Data Breach

IMPACT

namesaddressesSocial Security numbersdriver’s license numbersstate identification numbersfinancial account information

DATA BREACH

PIIFinancial InformationSensitivity Of Data: HighnamesaddressesSocial Security numbersdriver’s license numbersstate identification numbers

REFERENCES

Blog URL Source URL

AUGUST 2017

661

Breach

17 Aug 2017 • MassMutual

Massachusetts Mutual Life Insurance Company

MassMutual Data Breach

598

CRITICAL-63

MAS345072525

On August 29, 2017, the California Office of the Attorney General reported a data breach involving Massachusetts Mutual Life Insurance Company (MassMutual) which occurred on August 17, 2017. The breach involved unauthorized access to nonpublic personally identifiable information (PII) of clients as a result of social engineering tactics exploiting the access credentials of two insurance agents. The total number of individuals affected is currently unknown.

INCIDENT DETAILS -

TYPE

Data Breach

IMPACT

Data Compromised: PII

DATA BREACH

Type Of Data Compromised: PIIPersonally Identifiable Information: Nonpublic PII

REFERENCES

Blog URL Source URL

DECEMBER 2013

566

Breach

03 Dec 2013 • MassMutual

Massachusetts Mutual Life Insurance Company

MassMutual Data Breach

503

CRITICAL-63

MAS711072625

On December 16, 2013, the California Office of the Attorney General reported a data breach involving Massachusetts Mutual Life Insurance Company (MassMutual) that occurred on December 3, 2013. The breach involved the inadvertent disclosure of personal identifying information, including names, addresses, dates of birth, Social Security numbers, and retirement plan details of individuals. Affected individuals were offered a two-year subscription to Equifax Credit Watch for monitoring personal and credit information.

INCIDENT DETAILS -

TYPE

Data Breach

IMPACT

namesaddressesdates of birthSocial Security numbersretirement plan details

DATA BREACH

Personal Identifying InformationSensitivity Of Data: Highnamesaddressesdates of birthSocial Security numbers

REFERENCES

Blog URL Source URL

SEPTEMBER 2013

617

Breach

13 Sep 2013 • MassMutual

Massachusetts Mutual Life Insurance Company

MassMutual Data Breach

555

LOW-62

MAS322072825

The California Office of the Attorney General reported a data breach involving Massachusetts Mutual Life Insurance Company (MassMutual) on October 4, 2013. The breach occurred on September 13, 2013, and involved the potential exposure of personal information, including names, dates of birth, and Social Security numbers, due to a damaged mailing by the United States Postal Service (USPS).

INCIDENT DETAILS -

TYPE

Data Breach

IMPACT

namesdates of birthSocial Security numbers

DATA BREACH

namesdates of birthSocial Security numbersSensitivity Of Data: High

REFERENCES

Blog URL Source URL

MAY 2013

667

Breach

08 May 2013 • MassMutual

Massachusetts Mutual Life Insurance Company

MassMutual Data Breach

604

HIGH-63

MAS1022072725

The California Office of the Attorney General reported a data breach involving Massachusetts Mutual Life Insurance Company (MassMutual) on June 4, 2013. The breach occurred on May 8, 2013, due to an inadvertent disclosure of personal identifying information, including names and Social Security numbers, to a non-affiliated third party, affecting an unspecified number of individuals.

INCIDENT DETAILS -

TYPE

Data Breach

IMPACT

NamesSocial Security numbers

DATA BREACH

NamesSocial Security numbersSensitivity Of Data: High

REFERENCES

Blog URL Source URL

JANUARY 2013

722

Breach

30 Jan 2013 • MassMutual

Massachusetts Mutual Life Insurance Company

Massachusetts Mutual Life Insurance Company Data Breach

660

CRITICAL-62

MAS254080425

The California Office of the Attorney General reported that Massachusetts Mutual Life Insurance Company experienced a data breach involving the mailing of IRS Form 1099 to incorrect addresses on January 30, 2013. The breach affected customer information, including names, addresses, Social Security Numbers, and financial details, but it is unknown how many individuals were affected.

INCIDENT DETAILS -

TYPE

Data Breach

IMPACT

namesaddressesSocial Security Numbersfinancial details

DATA BREACH

namesaddressesSocial Security Numbersfinancial detailsSensitivity Of Data: High

REFERENCES

Blog URL Source URL

JULY 2012

777

Breach

13 Jul 2012 • MassMutual

Massachusetts Mutual Life Insurance Company

Massachusetts Mutual Life Insurance Company Data Breach

715

CRITICAL-62

MAS542072925

The California Office of the Attorney General reported that Massachusetts Mutual Life Insurance Company experienced a data breach on July 13, 2012. The breach involved the inadvertent exposure of customer names, Social Security numbers, and 401(k) balance information. This incident was reported on July 31, 2012.

INCIDENT DETAILS -

TYPE

Data Breach

IMPACT

customer namesSocial Security numbers401(k) balance information

DATA BREACH

customer namesSocial Security numbers401(k) balance informationSensitivity Of Data: High

REFERENCES

Blog URL Source URL

Frequently Asked Questions

What is the current A.I Rankiteo Cyber Score for MassMutual ?

What was MassMutual's A.I Rankiteo Cyber Score in June 2026 ?

What was MassMutual's A.I Rankiteo Cyber Score in May 2026 ?

What was MassMutual's A.I Rankiteo Cyber Score in April 2026 ?

What was MassMutual's A.I Rankiteo Cyber Score in March 2026 ?

What was MassMutual's A.I Rankiteo Cyber Score in February 2026 ?

What was MassMutual's A.I Rankiteo Cyber Score in January 2026 ?

What was MassMutual's A.I Rankiteo Cyber Score in December 2025 ?

What was MassMutual's A.I Rankiteo Cyber Score in November 2025 ?

What was MassMutual's A.I Rankiteo Cyber Score in October 2025 ?

What was MassMutual's A.I Rankiteo Cyber Score in September 2025 ?

What was MassMutual's A.I Rankiteo Cyber Score in August 2025 ?

What is the average per-incident point impact on MassMutual's A.I Rankiteo Cyber Score over the past 12 months ?

Where can I access detailed records of all cyber incidents associated with MassMutual ?

Where can I find a summary of the A.I Rankiteo Risk Scoring methodology ?

Where can I view MassMutual's profile page on Rankiteo ?

How accurate is the A.I Rankiteo Risk Scoring methodology ?