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iCloud Calendar Invites Abused to Phish PayPal Users via Legitimate Infrastructure

ID: 791acbca-315a-5c92-bb3d-2f554fb3dab2

STIX ID: report--791acbca-315a-5c92-bb3d-2f554fb3dab2

Feed Name: Zimperium Blog

Threat Score
65/100

Date Published: 2025-09-22

Date Updated: 2026-05-01

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Attackers are abusing iCloud Calendar invites (delivered from legitimate Apple servers and routed through Microsoft 365 forwarding) to deliver PayPal-themed phishing notifications that prompt recipients to call a fraudulent support number; the technique leverages mobile UI limitations to increase credibility and can lead to malware installation or social-engineered fraud.

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