--- title: Aflac Japan Data Breach Impacts 4.38 Million Customers... description: Aflac Life Insurance Japan disclosed a data breach affecting approximately 4.38 million customers and agents. Hackers accessed the policyholder portal multiple... canonical: https://daily.dev/posts/aflac-japan-data-breach-impacts-4-38-million-customers-and-agents-qvipd127b twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Aflac Japan Data Breach Impacts 4.38 Million Customers and Agents | daily.dev og:description: Aflac Life Insurance Japan disclosed a data breach affecting approximately 4.38 million customers and agents. Hackers accessed the policyholder portal multiple... og:url: https://daily.dev/posts/aflac-japan-data-breach-impacts-4-38-million-customers-and-agents-qvipd127b og:image: https://api.daily.dev/og/posts/QvIpD127b.png og:image:alt: Aflac Japan Data Breach Impacts 4.38 Million Customers and Agents og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Aflac Japan Data Breach Impacts 4.38 Million Customers and Agents **[Security Boulevard](https://daily.dev/sources/securityboulevard)** · 3 min read · 0 upvotes · 0 comments ## Summary Aflac Life Insurance Japan disclosed a data breach affecting approximately 4.38 million customers and agents. Hackers accessed the policyholder portal multiple times between June 15 and June 25, 2026, exfiltrating personal data including names, addresses, phone numbers, dates of birth, gender, security information, and insurance account details. Around 230,000 people also had premium transfer account information stolen. At least five services were disrupted. The post offers CISO-focused analysis, highlighting the risks of customer portal breaches in the insurance sector and recommending three practical actions: strengthening portal monitoring, preparing breach response plans for insurance data exposure, and balancing containment with service continuity. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Insurance giant Aflac discloses data breach after subsidiary hack](https://daily.dev/posts/insurance-giant-aflac-discloses-data-breach-after-subsidiary-hack-thpwkalcm) · BleepingComputer · 0 upvotes · 0 comments - [US insurance giant Aflac says hackers stole personal and health data of 22.6 million](https://daily.dev/posts/us-insurance-giant-aflac-says-hackers-stole-personal-and-health-data-of-22-6-million-x6pznhqyi) · TechCrunch · 0 upvotes · 0 comments - [Best of 2025: Scattered Spider Targets Aflac, Other Insurance Companies](https://daily.dev/posts/best-of-2025-scattered-spider-targets-aflac-other-insurance-companies-ipnl1oofj) · Security Boulevard · 0 upvotes · 0 comments - [AssuranceAmerica data breach exposes records of 6.9 million drivers](https://daily.dev/posts/assuranceamerica-data-breach-exposes-records-of-6-9-million-drivers-yfppzggbj) · BleepingComputer · 0 upvotes · 0 comments --- Tags: [#data-breach](https://daily.dev/tags/data-breach), [#data-exfiltration](https://daily.dev/tags/data-exfiltration) [View this post on daily.dev](https://daily.dev/posts/aflac-japan-data-breach-impacts-4-38-million-customers-and-agents-qvipd127b) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Aflac Japan Data Breach Impacts 4.38 Million Customers and Agents","url":"https://daily.dev/posts/aflac-japan-data-breach-impacts-4-38-million-customers-and-agents-qvipd127b","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/aflac-japan-data-breach-impacts-4-38-million-customers-and-agents-qvipd127b"},"datePublished":"2026-07-01T07:08:32.973Z","dateModified":"2026-07-01T07:08:58.364Z","description":"Aflac Life Insurance Japan disclosed a data breach affecting approximately 4.38 million customers and agents. 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