---
title: Security and data protection in Microsoft Exchange 2010, 2013, 2016 (Outlook)
description: All communication between Joan devices, MyJoan, and the Microsoft Exchange calendar is managed through the official, standard NTLM authentication using the EWS API with access granted and certain cred
---
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# Security and data protection in Microsoft Exchange 2010, 2013, 2016 (Outlook)
All communication between Joan devices, MyJoan, and the Microsoft Exchange calendar is managed through the official, standard NTLM authentication using the EWS API with access granted and certain credentials stored in encrypted form.
Outside of the Room Booking feature and the Advanced Analytics feature, no calendar or event information is permanently stored on our servers. In those cases, the Visionect Software Suite only stores the email of the room's resource. All other information is gained through an API call, parsed and sent directly to the device. This information is temporarily stored in our cache, just to make sure the events are still displayed even if the calendar service experiences a downtime.
When the Room Booking feature is used, calendar events from room calendars are synchronized with our internal database for a rolling window of three months into the future. Events beyond this window are synchronized on demand only when a MyJoan user initiates a calendar action for them. The data collected, how long it is retained, and how to request its deletion are described in the [Room booking](https://support.getjoan.com/knowledge/room-booking?hsLang=en) article.
On the Joan Enterprise subscription plan, certain summarized calendar or event information is stored to enable the Advanced Analytics feature. This includes the first and last name and email of the organizer and attendees, meeting duration, meeting confirmation, and meeting room.
As for user information, such as usernames and passwords, they are kept encrypted in our database for seamless use. No information is or will be shared or sold to third parties as stated in our [Privacy Policy](https://getjoan.com/privacy-policy/).
All data we collect and process is encrypted at rest and in transit.
For more detailed information, [review our Privacy Policy here](https://getjoan.com/privacy-policy/) or visit the [Security](https://getjoan.com/security/) page of our website.
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