{"rewrite":{"id":"r_5a1b01b1882784fc4d8fffc6","clusterId":"c_a6d176a9166ae981c6b955ed","slug":"sega-confirms-2-19-million-email-addresses-leaked-through-newsletter-contractor-arara","model":"deepseek-v4-1-flash","headline":"Sega Confirms 2.19 Million Email Addresses Leaked Through Newsletter Contractor ARARA","summary":"Sega said unauthorized access to ARARA Message, the email newsletter service run by contractor ARARA, leaked 2,196,044 email addresses, with 92,273 of those records also including what Sega calls information accompanying distribution. The affected mailings are 11 sends between July and October 2026, including CHUNITHM Mate, Ongeki Re:Fresh Act.2 and maimai DX MAGiCAL operation notices. Names, birth dates, addresses, phone numbers, card data and passwords were not leaked, and SEGA Account addresses are unaffected.","whyItMatters":"Sega first passed on ARARA's assurance that nothing had leaked on October 29 and only confirmed the leak on November 3, after ARARA disclosed the breach itself on November 1, which is the timeline that matters for anyone whose address sat in those eleven send lists.","webCardHtml":"\u003cp\u003eSega traced the exposure to the distribution lists of newsletters sent through ARARA Message, the service operated by ARARA. The eleven affected sends ran from July 2 to October 28, 2026, and cover Sega Lucky Kuji notices, Tokyo Game Show 2026 exhibit mailings, and operation announcements for CHUNITHM Mate, Ongeki Re:Fresh Act.2 and maimai DX MAGiCAL.\u003c/p\u003e\u003cp\u003eSega has not disclosed what the information accompanying distribution on 92,273 records contains, saying it is still investigating with ARARA. Newsletter distribution through ARARA Message is suspended until safety is confirmed, and the two companies plan to report the matter jointly to the Personal Information Protection Commission.\u003c/p\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eJuly 2: Notice of the start of operation of CHUNITHM Mate\u003c/strong\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eJuly 6: Sega Lucky Kuji Online release information\u003c/strong\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eJuly 13: Sega Lucky Kuji Online release information\u003c/strong\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eJuly 23: Notice of the start of operation of Ongeki Re:Fresh Act.2\u003c/strong\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eSeptember 4: Sega Lucky Kuji release information\u003c/strong\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eSeptember 7: Sega Lucky Kuji Online release information\u003c/strong\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eSeptember 17: Tokyo Game Show 2026 exhibit information\u003c/strong\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eSeptember 17: Notice of the start of operation of maimai DX MAGiCAL\u003c/strong\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eSeptember 18: Tokyo Game Show 2026 exhibit information\u003c/strong\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eOctober 21: Sega Lucky Kuji Online release information\u003c/strong\u003e\u003c/li\u003e\u003cli\u003e\u003cstrong\u003eOctober 28: Sega Lucky Kuji Online release information\u003c/strong\u003e\u003c/li\u003e\u003c/ul\u003e","blueskyPost":"Sega confirms 2,196,044 email addresses leaked via newsletter contractor ARARA. 92,273 records also carried undisclosed \"information accompanying distribution.\" The 11 affected sends ran July 2 to October 28, 2026. Passwords and card data were not exposed.","twitterPost":"Sega: 2,196,044 email addresses leaked through ARARA Message, its outsourced newsletter service. 92,273 records also included undisclosed accompanying information. Affected sends ran July 2 to Oct 28, 2026. Passwords and card data were not exposed.","threadsPost":null,"newsletterBlurb":"Sega confirmed that unauthorized access to ARARA Message, the newsletter service run by contractor ARARA, exposed 2,196,044 email addresses. The eleven affected sends between July and October 2026 included operation notices for CHUNITHM Mate, Ongeki Re:Fresh Act.2 and maimai DX MAGiCAL. Sega says names, card data and passwords were not leaked and that SEGA Account addresses are unaffected.","attributionJson":"[{\"source\":\"Game Spark\",\"url\":\"http://www.gamespark.jp/article/2026/11/09/174648.html\",\"title\":\"Unauthorized access to Sega's email newsletter distribution contractor leaks over 2.19 million email addresses-recipients of 'CHUNITHM' and 'maimai' operation announcements and more\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":5518,"outputTokens":1123,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1794200931,"createdAt":"2026-11-09T05:03:38.000Z","publishedAt":"2026-11-09T05:07:25.000Z","updatedAt":"2026-11-09T05:07:25.000Z"},"cluster":{"id":"c_a6d176a9166ae981c6b955ed","canonicalTitle":"セガのメルマガ配信委託先に不正アクセス、メールアドレス219万件超が流出―『CHUNITHM』『maimai』稼働告知などの配信先","representativeArticleId":"a_cd94c1755d59fde14ea41312","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"CHUNITHM\",\"maimai\"],\"studios\":[\"Sega\"],\"people\":[],\"type\":\"news\",\"domain\":\"games\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-11-09T04:27:55.000Z","lastSeenAt":"2026-11-09T04:27:55.000Z","updatedAt":"2026-11-09T05:07:25.000Z"},"attribution":[{"source":"Game Spark","url":"http://www.gamespark.jp/article/2026/11/09/174648.html","title":"セガのメルマガ配信委託先に不正アクセス、メールアドレス219万件超が流出―『CHUNITHM』『maimai』稼働告知などの配信先"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["CHUNITHM","maimai"],"studios":["Sega"],"people":[],"type":"news","domain":"games","is_roundup":false},"keyFacts":["Sega reported that 2,196,044 email addresses leaked after unauthorized access to ARARA Message, operated by ARARA.","Of the leaked records, 92,273 also included information accompanying distribution, which Sega has not detailed.","Sega said names, birth dates, addresses, phone numbers, credit card information and passwords were not leaked.","Distribution through ARARA Message is suspended until safety is confirmed."],"pageLinks":{"healthSlugs":["chunithm","maimai","sega"],"storySlugs":[],"entities":[{"slug":"chunithm","supported":1,"disputed":0,"contradicted":0,"unverified":5,"overall":"green","story_count":5,"has_dossier":true},{"slug":"maimai","supported":1,"disputed":0,"contradicted":0,"unverified":1,"overall":"green","story_count":2,"has_dossier":true},{"slug":"sega","supported":12,"disputed":0,"contradicted":0,"unverified":98,"overall":"green","story_count":211,"has_dossier":true}],"stories":[],"entitiesOk":true,"storiesOk":true}}