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Phishing Emails Masquerading as Spam Alerts Target Email Credentials

First seen 2 Dec 2025, 18:33 UTC • •7.8

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ThreatCluster •March 12, 2026 at 13:27 UTC

Phishing emails disguised as spam filter alerts are being used to steal user login credentials. These emails often contain a 'Secure Message' alert that prompts users to click, leading to potential credential theft. Organizations and their employees are primarily affected by this tactic.

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4 entities, 3 inferred relationships (STIX 2.1).

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Technique (4)

Data Breach
Malware
Phishing
T1566 - Phishing

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