Microsoft says an Exchange Online issue that mistakenly quarantined legitimate emails last week was triggered by faulty heuristic detection rules designed to block credential phishing campaigns.
Microsoft is investigating an ongoing Exchange Online issue that mistakenly flags legitimate emails as phishing and quarantines them.
Microsoft is investigating an Exchange Online incident that wrongly flags emails as phishing, quarantining messages and disrupting delivery.
Microsoft has confirmed Exchange Online is incorrectly flagging legitimate emails as phishing due to an overly aggressive URL ...
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