Forum Discussion
Sent from Outlook for iOS links Being Quarantined in Defender
Hi, Microsoft seem to be falsely flagging their own shortening URL for hxxps://aka.ms/o0ukef as High Confidence Phishing This is the link that is created in emails when a user sends an email ...
The issue is occurring again and causing massive impact!
Yesterday, today and ongoing we are suddenly seeing any emails that contain the link https://aka.ms/o0ukef being quarantined as 'High Confidence Phish'.
Yesterday, today and ongoing we are suddenly seeing any emails that contain the link https://aka.ms/o0ukef being quarantined as 'High Confidence Phish'.
Haven't started to see this yet again in our tenant (UK) but will keep an eye out for it.
Thanks for the heads up
UrjaGandhi FYI for new events being reported by users
Long story short, looks like our issue might have been caused by an external vendor accidentally adding an incorrect Defender Tenant Block rule.. It's been a painful cleanup!