Phishing campaign steals accounts for Zimbra email servers worlwide
An ongoing phishing campaign has been underway since at least April 2023 that attempts to steal credentials for Zimbra Collaboration email servers worldwide. [...]
Stolen credentials can enable account takeover and lateral movement; phishing-resistant MFA, password managers, and rapid revocation reduce the risk.
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Background for this topic.
Credentials are the data used to verify a user's identity to a system, commonly including usernames, passwords, security tokens, or biometric identifiers. They serve as gatekeepers for access to accounts, applications, and sensitive information. Attackers target credentials to impersonate users, escalate privileges, or gain unauthorized system access.
Compromise of credentials can occur through phishing, credential stuffing, or theft from insecure storage. Effective defenses include enforcing strong, unique passwords, implementing multi-factor authentication (MFA), and securely storing credentials using hashing or encryption. Monitoring for unusual login patterns and promptly revoking compromised credentials are also critical to limit attacker impact.
An ongoing phishing campaign has been underway since at least April 2023 that attempts to steal credentials for Zimbra Collaboration email servers worldwide. [...]
Researchers discovered 120,000 infected systems that contained credentials for cybercrime forums. Many of the computers belong to hackers, the researchers say. [...]