Social Security involves sensitive identity data, benefit records, and government systems that can be targeted for fraud, theft, or unauthorized misuse.
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Social Security is the U.S. federal program that provides retirement, disability, and survivor benefits, funded primarily through payroll taxes. A Social Security number (SSN), issued for administering the program, is also widely used by employers, financial institutions, government agencies, and other organizations to identify people and verify eligibility.
For security practitioners, SSNs are high-value personal data: exposure can support identity theft, fraudulent benefit claims, unauthorized account creation, or targeted phishing, especially when combined with names, birth dates, or financial information. Relevant controls include collecting and retaining SSNs only when necessary, restricting and auditing access, encrypting them in storage and transit, and using multifactor authentication and stronger identity proofing for benefit and administrative accounts. Organizations should also monitor for anomalous changes or claims and include SSN exposure in privacy assessments and incident-response procedures.
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Navia Benefit Solutions Says Potential Data Theft Took Place Over 3-Week PeriodA Washington-state based employee benefits administrator is notifying nearly 2.7 million individuals that their information, including health plan and personal details such as Social Security numbers, was potentially stolen in a hacking incident discovered in January.
Health Researchers Often Overlook Security of Historical DatasetsAn August 2025 ransomware attack on the University of Hawaii Cancer Center's epidemiology division has affected 1.2 million individuals, including personal information such as Social Security numbers of certain research study participants dating back more than 30 years.
Also, CIRO Phishing Breach, Ingram Micro Ransomware and CVE SurgeThis week, DOGE posted sensitive data on an outside server. A phishing attack affected 750,000 Canadians. A hacktivism warning from the U.K. NCSC. An Ingram Micro breach. CVEs surged in 2025. SK Telecom challenged a fine. Researchers disclosed Chainlit flaws. North Korean hackers abused VS Code.
Insurer's Hack Could Rank as Largest US Health Data Breach Reported in 2025Supplemental health insurer Aflac is notifying 22.65 million people whose sensitive health and personal information, including Social Security numbers, was potentially compromised in a June data theft incident. The incident will likely rank as the biggest U.S. health data breach reported in 2025.
Insurer's Hack Could Rank as Largest US Health Data Breach Reported in 2025Supplemental health insurer Aflac is notifying 22.65 million people whose sensitive health and personal information, including Social Security numbers, was potentially compromised in a June data theft incident. The incident will likely rank as the biggest U.S. health data breach reported in 2025.
Marquis Software Solutions Says Ransomware Group Hit SonicWall Device, Stole DataMarketing and compliance software maker Marquis Software Solutions, which counts over 700 banks and credit unions as customers, said a ransomware group breached its SonicWall firewall and stole hundreds of thousands of individuals' personal details, including Social Security numbers.
Breach Notification Service Details Peer-to-Peer Lending Marketplace Victim CountHackers appear to have stolen personal information pertaining to more than 17 million individuals from peer-to-peer lending marketplace Prosper, including Social Security numbers, contact information and some income and financial details, says the Have I Been Pwned breach notification service.
Also: Netskope's High-Stakes IPO, How AI Sovereignty Threatens Our Shared RealityIn this week's update, four ISMG editors discussed explosive whistleblower claims about alleged mishandling of Americans' sensitive U.S. Social Security data, Netskope's push for an initial public offering and the global fight over the geopolitical sovereignty of artificial intelligence platforms.
Department of Government Efficiency Staffers Created 'Live Replica' of SSA DataThe Social Security Administration's chief data officer is warning in a whistleblower complaint that DOGE created a cloud replica of the Social Security database without proper authorization or oversight, potentially exposing the personal data of 300 million Americans.
Personal Data Stolen in Ransomware Hit, Says Dutch Owner of Stop & Shop, Giant FoodFood retail giant Ahold Delhaize USA is notifying 2.2 million current and former employees, as well as an unspecified number of employees in the Netherlands, that a November 2024 data breach exposed their personally identifiable information, including Social Security numbers and medical details.
Unsigned Order Overturns District Court InjunctionThe U.S. Supreme Court granted Friday a Trump administration cost-cutting effort known as the "Department of Government Efficiency" access to data on Americans held at the Social Security Administration. Two liberal justices accused their conservative colleagues of a double standard.
Leaked Records Include Names, Decrypted Social Security Numbers and AddressesHackers have seemingly re-released a refined trove of 86 million AT&T records, including decrypted Social Security numbers and full identity data, heightening the risk of fraud and impersonation for tens of millions of users as researchers cite structural improvements in the dataset.
Judge Orders DOGE Staffers to Delete Social Security Data in Scathing OrderA federal judge has issued a temporary restraining order restricting Department of Government Efficiency employees from accessing data containing personally identifiable information at the Social Security Administration. DOGE "essentially engaged in a fishing expedition," the judge wrote.
Reuben Stewart of PNC Discusses Ways to Move Away from Using Static DataDigital identity proofing is a major challenge for banks and financial services firms. Many organizations rely on static data, such as Social Security numbers, which fraudsters can easily steal and misuse, said Reuben Stewart, digital identity lead at PNC Bank.
Ousted Social Security Official Accuses DOGE of Bypassing Critical Data ProtectionsA former top official at the Social Security Administration has alleged that members of Elon Musk's controversial task force ignored critical security protocols to gain unauthorized access to sensitive data while disregarding established procedures designed to protect it.
American Addiction Centers Says 422,424 Individuals' Private Details ExposedSubstance abuse treatment company American Addiction Centers is warning nearly half a million patients that ransomware-wielding attackers stole their personal details, including names and Social Security numbers. The Rhysida ransomware operation claimed to perpetrate the attack.
GAO: SSA Fails to Meet Industry and Federal Electronic Verification System GoalsThe Social Security Administration is facing criticism for failing to update its fraud prevention technology, leaving financial institutions and federal authorities at risk of missing synthetic identity scams, according to a new Government Accountability Office report.
Stolen Data Includes Social Security Numbers and Details of Criminal InvestigationsMoneyGram Payment Systems, a Dallas-based money transfer system, said hackers who hit its infrastructure last month stole customer data, including contact details, Social Security numbers and information pertaining to criminal fraud investigations.
1.3 Million Individuals Being Notified Their Social Security Numbers Were StolenBackground check firm Jericho Pictures, which does business as National Public Data, is notifying 1.3 million individuals that their personal information was stolen via a December 2023 breach of its systems. The stolen information was listed for sale on a cybercrime market beginning in April.
InfoSys McCamish Systems Earlier Alerted 57,000 Bank of America Clients of BreachInfosys McCamish Systems, an insurance software product and services vendor, is notifying nearly 6.1 million people of a 2023 ransomware incident that potentially comprised their sensitive data, including Social Security numbers, medical treatment, and financial and biometric information.