Warning: Microsoft Outlook app breaks (company) security

A few day ago, Microsoft has released their Outlook app for Android and iOS. Sounds good, but this app comes with a possible breach of your companies (or private) security rules.


I need to confess, I've blogged about the Outlook app for Android and iOS within my German blog (Office für Android & Outlook für Android/iOS freigegeben). Reading my article, shows, that I wasn't too enthusiastic about Office for Android and the Outlook app.

Some users noticed, that Outlook for Android and iOS was nothing else that the previous Acompli app. Microsoft has acquired Acompli last December for 200 Million US $. Now they re-labeled the App to Microsoft Outlook and put it into Google Play Store and Apples iTunes store. But that's not the beef – here comes more.

Some readers commented the Outlook app as disappointing within my German blog. But the main caveat comes from René Winkelmeyer, who blogged about the app and expressed a security warning. The Acompli Microsoft Outlook app stores all your credentials for E-Mail accounts, your attachments, your calendar data and even more data within the cloud. Several German news magazines are reporting about this incident.

If you are administrate also mobile devices within a company, the only advice we can give is: Block the Microsoft Outlook app for security and data privacy reasons. If you are a private user, re-thing about using Microsoft Outlook app to exchange your e-mails. From my current view I can't understand, why Microsoft's management allowed to release such an app. My confidence into reliability and accurateness of Microsoft's products and cloud services was damaged badly today.

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