Apple iCloud Email Spoofing Flaws Could Bypass SPF, DKIM and DMARC
RedSide Security October 02, 2026 Cybersecurity 4 views
Security researchers discovered two iCloud email spoofing vulnerabilities that could have allowed attackers to send messages appearing to originate from arbitrary @icloud.com addresses while still passing SPF, DKIM, and DMARC authentication checks.
Cybersecurity
Apple
Security Research
Vulnerability
Phishing
Social Engineering
iCloud
Email Spoofing
Email Security
SMTP
SMTP Smuggling
SPF
DKIM
DMARC
Email Authentication
Apple Security
Email Security Bypass
Header Injection
SEC Consult
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