Welcome to 2016 - seriously
The use of ML was added to the general Adobe T&Cs in the update on June 16 2016
Prior to that the Our Use section read:
Adobe General Terms of Use
Last updated April 7, 2015. Replaces the June 18, 2014 version in its entirety.
3. Your Content.
3.3 Our Access. We will not access, view, or listen to any of your content, except as reasonably necessary to perform the Services. Actions reasonably necessary to perform the Services may include (but are not limited to) (a) responding to support requests; (b) detecting, preventing, or otherwise addressing fraud, security, unlawful, or technical issues; and (c) enforcing these terms.
When updated, the section read:
Adobe General Terms of Use
Last updated June 16, 2016. Replaces the prior version in its entirety.
3.3 Our Access. We will only access, view, or listen to your content in limited ways. For example, in order to perform the Services, we may need to access, view, or listen to your content to (a) respond to support requests; (b) detect, prevent, or otherwise address fraud, security, unlawful, or technical issues; and (c) enforce these terms. Our automated systems may analyze your content using techniques such as machine learning. This analysis might occur as the content is sent, received, or when it is stored. From this analysis, we are able to improve the Services. To learn more about the machine learning we do, go to http://www.adobe.com/go/machine_learning.