Apple's iCloud Calendar service has been exploited by cybercriminals to send phishing emails directly from Apple's servers, bypassing traditional email security filters. This novel attack vector leverages the calendar invitation feature to distribute malicious links, making the phishing attempts appear more legitimate and trustworthy to recipients. The abuse of iCloud Calendar highlights the evolving tactics of threat actors who continuously seek new methods to evade detection and compromise users.
Phishing emails sent via calendar invites can bypass spam filters because they originate from a trusted domain, in this case, Apple's own servers. Users receive calendar event invitations containing links that lead to phishing websites designed to steal sensitive information such as login credentials and personal data. This method poses a significant risk as it exploits the inherent trust users place in calendar notifications and Apple's infrastructure.
Security experts recommend users to be vigilant when accepting calendar invites, especially those containing links or from unknown senders. Organizations should consider implementing additional security measures such as multi-factor authentication and enhanced email filtering rules to detect and block such phishing attempts. Apple is expected to address this abuse vector by improving its calendar invitation security protocols to prevent misuse.
This incident underscores the importance of continuous monitoring and adaptation in cybersecurity defenses to counteract innovative phishing techniques. Users and organizations alike must stay informed about emerging threats and adopt best practices to safeguard their digital environments from sophisticated social engineering attacks.
This Cyber News was published on www.bleepingcomputer.com. Publication date: Sun, 07 Sep 2025 17:10:43 +0000