[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f5k0a0d8wty2w":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":28,"seoTitle":29,"seoTitleEn":30,"seoDescription":29,"seoDescriptionEn":31,"logoUrl":32,"isVerified":4,"isSensitive":4,"isSpamList":33,"isMalware":33,"company":34},"68e3266eda11adda48825136","carding-mafia-march-2021","Carding Mafia (March 2021) Data Breach","cardmafia.cc","2021-03-18T00:00:00.000Z","2021-03-23T05:00:29.000Z","2026-07-09T17:55:41.890Z","2026-07-18T23:46:52.433Z","Third party breach","https:\u002F\u002Fwww.vice.com\u002Fen\u002Farticle\u002Fcredit-card-hacking-forum-gets-hacked-exposing-300000-hackers-accounts\u002F",[15,17],"https:\u002F\u002Fsiliconangle.com\u002F2021\u002F03\u002F28\u002Fstolen-credit-card-forum-hacked-user-details-published-online\u002F",297744,"known",null,"unknown","High",[24,25,26,27],"Email addresses","IP addresses","Passwords","Usernames","\u003Cp>The Carding Mafia March 2021 data breach is associated with the verified leak of the carding forum known by the domain cardmafia.cc during the March 2021 period. The incident was recorded on March 18, 2021, and the confirmed impact is at the level of 297,744 accounts. Since a second breach record was also found for the same forum in the December 2021 period, this record should be kept separate as the March 2021 incident and should not be confused with the later incident.\u003C\u002Fp>\n\u003Cp>The verified data classes for this record are email addresses, IP addresses, passwords, and usernames. It has been verified that passwords are stored as salted MD5 hashes. While the use of salt makes some direct matches more difficult, MD5 is considered weak for current password storage expectations. Due to the forum's subject, the presence of users in this data set may also be sensitive; not only technical account security but also the risk of identity matching and targeted harassment should be considered.\u003C\u002Fp>\n\u003Ch2>Leaked Data Types and Risks\u003C\u002Fh2>\n\u003Cp>In the Carding Mafia March 2021 record, email addresses, IP addresses, usernames, and password hashes have been verified. The email address can be used to directly reach the user. A username may link different profiles if the same nickname is used on different forums or messaging platforms. IP addresses can also provide technical signals about the previous session location and connection habits.\u003C\u002Fp>\n\u003Cp>Finding passwords in salted MD5 form does not mean that the plain text password has been directly exposed; however, the risk continues for weak or reused passwords. If a user has used the same password in their email account, other forums, social media accounts, or work accounts, attackers may try this password on those accounts. In this incident, the context of forum membership itself should also be considered sensitive.\u003C\u002Fp>\n\u003Ch2>Verified Scope and Boundaries\u003C\u002Fh2>\n\u003Cp>The verified scope of this record includes 297,744 accounts and four types of data: email addresses, IP addresses, passwords, and usernames. Additional profile, contact, content, or financial details outside of these four fields are not among the verified data fields for this record. The record should be limited to the verified fields of the March 2021 incident only.\u003C\u002Fp>\n\u003Cp>Two incidents should not be considered duplicate because there is a separate violation record for the same forum in December 2021. Although both records belong to the same domain name, the date, number of accounts, and verified incident context are different. The numbers and fields shown to the user should be preserved according to the verified scope of this record. No additional violation assumptions should be made for other forums or similarly named platforms.\u003C\u002Fp>\n\u003Ch2>User Groups at Risk\u003C\u002Fh2>\n\u003Cp>In the highest risk group are people who reuse the email, username, and password they used on the Carding Mafia forum on other accounts. Due to the nature of the forum, having an email address linked to a personal or corporate identity can pose a higher risk. People who use the same username in different communities may become more visible in terms of profile matching and targeted messages.\u003C\u002Fp>\n\u003Cp>The risk in such sensitive forum records is not limited to the need to change passwords. The IP address and username can contribute to linking a user's online behavior with other accounts. If registration was done with a corporate email address, the incident should also be examined from an occupational security perspective. Even if a personal email is used, the exposure of forum membership should be considered sensitive in terms of reputation and privacy.\u003C\u002Fp>\n\u003Ch2>Urgent Measures to Be Taken\u003C\u002Fh2>\n\u003Cp>Users who see a match should first determine the password they used on the Carding Mafia forum and whether the same password pattern is used on other accounts. If the same or similar password is still valid elsewhere, it should be changed immediately. Email accounts, forums, social media, chat platforms, developer accounts, and work accounts should have priority. A unique and long password should be used for each account.\u003C\u002Fp>\n\u003Cp>Users should be cautious of threats and phishing messages themed around forum membership, account security, or data sales. Instead of logging in through incoming links, one should go directly to the relevant services, unexpected files should not be opened, and two-factor authentication should be enabled on critical accounts. Account recovery options should be updated, and old password variations should no longer be used.\u003C\u002Fp>\n\u003Ch2>Long-Term Security Strategies\u003C\u002Fh2>\n\u003Cp>The Carding Mafia March 2021 incident shows that identity information used on sensitive context forums should be kept separate. Users should avoid using their primary email addresses, corporate addresses, and reused usernames on high-risk forums. Each account should have a unique password, separate identity information, and strong two-factor authentication should be preferred. Forum accounts that are no longer used should be closed.\u003C\u002Fp>\n\u003Cp>For corporate security teams, such records may raise the need to carefully and legally check whether employee email addresses appear in high-risk communities. On the user side, password managers, leaked password audits, pseudonym separation, and old account cleanup reduce long-term risk. In incidents involving sensitive forum membership, the privacy impact should be considered separately from technical account risk.\u003C\u002Fp>\n\u003Ch2>Record Control and User Action\u003C\u002Fh2>\n\u003Cp>The presence of a match with the email address in this record indicates that the user is included in the Carding Mafia March 2021 dataset. The user should first determine which username and password they used, whether this username can be linked to other accounts, and where the same password might have been reused. To avoid confusion with the December 2021 record, the date of the incident should also be taken into consideration.\u003C\u002Fp>\n\u003Cp>The match does not prove that additional personal or financial details outside of these four areas have been exposed; however, the presence of email, IP address, username, and salted MD5 password hashes together is a sufficient security alert. Using unique passwords, two-factor authentication, checking incoming messages through a trusted channel, and reducing sensitive context-specific accounts are steps that mitigate the risk of account takeover and identity matching resulting from this breach.\u003C\u002Fp>","","Carding Mafia (March 2021) Data Breach (297.7 Thousand Reported Records)","Carding Mafia (March 2021) Data Breach. 297.7 Thousand reported records were reported. Reported data: Email addresses, IP addresses, Passwords. Review the…","\u002Fuploads\u002Flogo\u002Fcardmafia_cc.webp",false,{"name":35,"sector":36,"country":29,"website":9,"websiteArchiveUrl":29,"websiteStatus":29,"websiteCheckedAt":20},"Carding Mafia (March 2021)","Carding forum \u002F cybercrime forum"]