[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f1452r1usfdxpd":3},{"success":4,"breach":5},true,{"_id":6,"name":7,"title":8,"slug":9,"domain":10,"breachDate":11,"addedDate":12,"modifiedDate":13,"contentUpdatedAt":14,"source":15,"sourceUrl":10,"sourceUrls":16,"pwnCount":17,"affectedCount":17,"affectedCountStatus":18,"affectedCountLowerBound":19,"affectedCountUnit":20,"hasEnglishDescription":4,"severity":21,"dataClasses":22,"description":26,"seoTitle":10,"seoTitleEn":27,"seoDescription":10,"seoDescriptionEn":28,"logoUrl":29,"isVerified":4,"isSensitive":30,"isSpamList":30,"isMalware":4,"company":31},"68e3266eda11adda48825347","red-line-stealer","RedLine Stealer Malware Exposure","redline-stealer","","2021-12-05T00:00:00.000Z","2021-12-30T05:24:21.000Z","2026-07-02T12:29:03.590Z","2026-07-18T23:57:01.751Z","Malware",[],441657,"known",null,"email_identifiers","High",[23,24,25],"Email addresses","Passwords","Usernames","\u003Cp>The RedLine Stealer data breach is a critical credential leak affecting approximately 441,657 unique accounts, resulting from the exposure of logs associated with the malware called RedLine in December 2021. This record is significant because, unlike a typical website breach, it involves login information collected from users' devices entering circulation. Since the record contains email addresses, usernames, and passwords, the risk of account takeover is direct and high.\u003C\u002Fp> \u003Ch2>Leaking Data Types and Risks\u003C\u002Fh2> \u003Cp>The verified data fields in the RedLine Stealer record are email addresses, usernames, and passwords. When these three appear together, attackers can target not only a single account but also other services where the same username and password are used. Additional fields like phone, physical address, payment information, or identification documents are not included in the description because they are not verified. The password field is the most sensitive element for this record; because login secrets that can be used in plain text or tried directly quickly weaken account security.\u003C\u002Fp> \u003Ch2>RedLine Malware Context\u003C\u002Fh2> \u003Cp>Malware similar to RedLine can create risks through credentials stored in the browser, session data, and account information entered by the user. Therefore, this entry should not be seen merely as an old password list circulating. If there are remnants of malware on the affected device, the same risk may recur even if the user sets a new password. The entry requires checking both account passwords and device security together.\u003C\u002Fp> \u003Ch2>Necessary Precautions\u003C\u002Fh2> \u003Cp>Affected users should first secure their email accounts and then change their passwords on all important services that use the same username or email. Using the same password with minor changes on other accounts is not safe. Email, banking, cloud storage, work accounts, social media, gaming platforms, and shopping sites should be checked first. Two-factor authentication should be enabled, unknown sessions should be closed, and account recovery information should be updated.\u003C\u002Fp> \u003Ch2>Device Cleaning and Session Security\u003C\u002Fh2> \u003Cp>Comprehensive cleaning should be performed on the device side. Scanning should be done with reliable security software, the operating system and browser should be updated, suspicious applications should be removed, and browser extensions should be reviewed. Passwords saved in the browser should be renewed, autofill data should be checked, and active sessions in synchronized accounts should be closed. In email accounts, forwarding rules, automatic filters, and third-party application permissions should be examined in particular.\u003C\u002Fp> \u003Ch2>Security Lessons for Institutions\u003C\u002Fh2> \u003Cp>The RedLine Stealer detection for institutions indicates the risk of credential leaks caused by malware on employee devices. If email addresses belonging to the corporate domain are affected, unusual locations, frequent failed login attempts, new device registrations, and unexpected session activities in identity provider logs should be investigated. For critical users, password reset, session termination, multi-factor authentication, endpoint security scanning, and device isolation can be considered together.\u003C\u002Fp> \u003Ch2>Long-Term Username and Password Risk\u003C\u002Fh2> \u003Cp>The RedLine Stealer data leak should be treated as a high priority due to verified email addresses, usernames, and passwords. When users see this notice, they should not just change the password of a single service; they should separate all accounts that use the same password habit, clean their devices, and strengthen their email account. The most effective defense is the combined implementation of unique passwords, two-factor authentication, session control, and malware scanning.\u003C\u002Fp> \u003Cp>Unlike other stealer log collections, the RedLine Stealer record also includes the username field among verified data classes. The username can make it easier to match the identity a person uses on forums, games, social media, or work tools. When the email address, username, and password are found together, it becomes easier for the attacker to both attempt automatic logins and prepare more convincing phishing messages. Therefore, the record requires not only a password change but also verification of account identity and device security.\u003C\u002Fp> \u003Cp>In the context of malware like RedLine, the endpoint security approach of organizations becomes important. If an employee account is affected, performing only a centralized password change may be insufficient; it should be checked whether there is persistent malware, suspicious applications, or unauthorized browser extensions on the device. For critical users, session tokens should be renewed, conditional access policies should be applied, and unexpected data downloads or admin panel accesses should also be reviewed.\u003C\u002Fp>","RedLine Stealer Malware Exposure (441.7 Thousand Email Identifiers)","RedLine Stealer Malware Exposure. 441.7 Thousand email identifiers were reported. Reported data: Email addresses, Passwords, Usernames. Review the scope…","\u002Fuploads\u002Flogo\u002Fred_line_stealer.webp",false,{"name":32,"sector":33,"country":10,"website":10,"websiteArchiveUrl":10,"websiteStatus":10,"websiteCheckedAt":19},"RedLine Stealer","Technology"]