[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f661g6rcj8qtj":3},{"success":4,"breach":5},true,{"_id":6,"name":7,"title":8,"slug":7,"domain":9,"breachDate":10,"addedDate":11,"modifiedDate":12,"contentUpdatedAt":13,"source":14,"sourceUrl":15,"sourceUrls":16,"pwnCount":18,"affectedCount":18,"affectedCountStatus":19,"affectedCountLowerBound":20,"affectedCountUnit":21,"hasEnglishDescription":4,"severity":22,"dataClasses":23,"description":31,"seoTitle":32,"seoTitleEn":33,"seoDescription":32,"seoDescriptionEn":34,"logoUrl":35,"isVerified":4,"isSensitive":4,"isSpamList":36,"isMalware":36,"company":37},"68e3266eda11adda48825120","bookmate","Bookmate Data Breach","bookmate.com","2018-07-08T00:00:00.000Z","2019-03-22T16:25:58.000Z","2026-07-09T16:59:18.685Z","2026-07-18T23:46:23.800Z","Third party breach","https:\u002F\u002Fdatabreach.com\u002Fbreach\u002Fbookmate-2018",[15,17],"https:\u002F\u002Fbookmate.com\u002Fabout\u002Flegal",3830916,"known",null,"unknown","Critical",[24,25,26,27,28,29,30],"Dates of birth","Email addresses","Genders","Geographic locations","Names","Passwords","Usernames","\u003Cp>The Bookmate data breach is related to the exposure of user records belonging to the social e-book subscription service used under the domain bookmate.com. The incident was recorded on July 8, 2018, and the verified impact is at the level of 3,830,916 unique email addresses. Since Bookmate is a subscription service that combines the book reading and audiobook experience with social features, the leaked areas may affect both users' account security and personal profile privacy.\u003C\u002Fp>\n\u003Cp>The verified data classes for this record are dates of birth, email addresses, gender information, geographic locations, names, passwords, and usernames. It has been reported that passwords are stored as salted SHA-512 hashes. This structure is different from the risk of plain text passwords; however, in cases of password reuse, weak password selection, and using the same username on different platforms, it still presents a valuable target for attackers.\u003C\u002Fp>\n\u003Ch2>Leaking Data Types and Risks\u003C\u002Fh2>\n\u003Cp>In the Bookmate breach, email addresses, names, usernames, dates of birth, gender information, geographic locations, and passwords are verified data fields. Email addresses and usernames can be used for account matching. Name, date of birth, and gender information, on the other hand, allow for the preparation of more personalized messages. Location information can be misused to understand the user's regional profile or to generate more convincing fake notifications with local content.\u003C\u002Fp>\n\u003Cp>Storing passwords in a salted SHA-512 format reduces the likelihood that users with the same password will produce identical outputs; however, SHA-512 is a hash family that can be computed quickly. Weak or reused passwords can become predictable over time. Therefore, the risk is not limited to the Bookmate account. If the user has used the same password for email, social media, book communities, shopping, or work accounts, these accounts should also be checked.\u003C\u002Fp>\n\u003Ch2>Verified Scope and Boundaries\u003C\u002Fh2>\n\u003Cp>The verified scope of this record is 3,830,916 unique email addresses and seven data classes: birth dates, email addresses, gender information, geographic locations, names, passwords, and usernames. Payment card, phone number, physical address, reading history, or private message content are not among the verified data classes for this record. These boundaries are important both to inform the user accurately and to avoid including unverified details in the breach scope.\u003C\u002Fp>\n\u003Cp>The incident pertains to user accounts of the Bookmate service; an automatic assumption of violation should not be made for similar e-book applications, publishers, or mobile operator partners. The number in the record indicates the impact on unique emails. Although the number of rows or raw records may vary across different sources, planning should be based on the number of unique accounts with verified user actions and the verified data types.\u003C\u002Fp>\n\u003Ch2>User Groups at Risk\u003C\u002Fh2>\n\u003Cp>Users in the highest risk group are those who reuse the password from their Bookmate account on other accounts. Due to personal fields such as date of birth, name, gender, and location, users may be targeted with fake subscriptions, reading recommendations, account verification, or regional campaign messages. The risk of profile matching also increases for those who use the same username in book communities, social networks, and forums.\u003C\u002Fp>\n\u003Cp>Since Bookmate was a service that spread to different regions in the past, users may have forgotten accounts they created many years ago. If passwords used in old accounts are still being used elsewhere, the risk remains current. Users who registered with their main email address, do not use a password manager, or continue old password patterns with small changes should prioritize addressing this record.\u003C\u002Fp>\n\u003Ch2>Urgent Measures to Be Taken\u003C\u002Fh2>\n\u003Cp>Users matching this record should first identify the password they used on their Bookmate account and other accounts where the same password is used. If the same or similar password is still being used on another account, it should be changed immediately. Email accounts, social media, cloud storage, shopping, subscription, and work accounts should be prioritized. Creating a unique and long password for each account reduces the risk of brute-force attacks arising from old datasets.\u003C\u002Fp>\n\u003Cp>Users should be cautious about personalized subscription renewals, fake reading recommendations, account security, or discount messages. Instead of logging in through received links, they should go directly to the relevant service, not open unexpected files, and update account recovery information. Two-step verification should be enabled for critical accounts, and variations of old passwords should no longer be used.\u003C\u002Fp>\n\u003Ch2>Long-Term Security Strategies\u003C\u002Fh2>\n\u003Cp>The Bookmate case shows that digital content and subscription services also carry strong personal profile data. Users should regularly review the profile information they share in reading, music, video, and education subscriptions. Accounts that are no longer used should be closed, and for those that cannot be closed, unique passwords should be used, and fields such as date of birth, location, or publicly visible username should be limited so that they do not contain unnecessary details.\u003C\u002Fp>\n\u003Cp>For service providers, such incidents show that in addition to password storage structure, profile data segmentation, access control, backup management, and incident reporting processes are also important. On the user side, leaked password checks, strong password managers, multi-factor authentication, and old account cleanup should be applied together. Even if a subscription account seems small, its impact can grow when combined with personal profile areas.\u003C\u002Fp>\n\u003Ch2>Record Control and User Action\u003C\u002Fh2>\n\u003Cp>The fact that a match is found with an email address in this record indicates that the user is included in the Bookmate data set. The user should first determine which password they used on their Bookmate account, and then check whether the same password or similar variations have been used on other accounts. Messages may appear more personal due to fields such as date of birth, location, and name; therefore, account security messages should be carefully examined.\u003C\u002Fp>\n\u003Cp>A match does not prove that the password was transmitted in plain text; however, the exposure of salted SHA-512 password hashes and personal profile fields is a sufficient security warning. The risk of account takeover and phishing resulting from the Bookmate breach is mitigated when unique passwords, two-factor authentication, checking email alerts directly from a trusted channel, and cleaning up old subscription accounts are implemented together.\u003C\u002Fp>","","Bookmate Data Breach (3.8 Million Reported Records)","Bookmate Data Breach. 3.8 Million reported records were reported. Reported data: Dates of birth, Email addresses, Genders. Review the scope, risks, and…","\u002Fuploads\u002Flogo\u002Fbookmate_com.webp",false,{"name":38,"sector":39,"country":40,"website":9,"websiteArchiveUrl":32,"websiteStatus":32,"websiteCheckedAt":20},"Bookmate","Social ebook subscription service","Ireland"]