Instructors at UConn will instructors can learn about secure and insecure non-secure content within HuskyCT that can create "Mixed Content"mixed content.
What is mixed content?
Since HuskyCT allows users to publish content, there will always be a potential for insecure non-secure items to be added. Most often, this occurs when embedded images, audio or video are linked to the course from non-SSL pages. When this occurshappens, the page is considered as having “mixed content“. That will then contain mixed content; that is, content which is both secure and insecurenon-secure.
Most modern browsers have built-in features which evaluate a pages page's level of security. When it meets their standard, the browser displays a padlock in the address bar (as shown above)bar. Otherwise, the browser may issue a mixed a mixed content warning. This warning is sometimes passive and not easily noticeable to the learner (see screenshots below)discernible by the learner. Additionally, some browsers may prevent the insecure non-secure content items from displaying on the page.
Firefox, Chrome, Microsoft Edge and IE all block insecure non-secure content by default. Safari is the only major browser which does not automatically block insecure non-secure content.
How
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Does Mixed Content Impact Learner Experience?
Depending on the context, it may be obvious to the learner that content has been blocked.
Example 1
In this example, the learner clearly expects a video clip on the page. Unfortunately, our course builder embedded the video and mistakenly used “http://” rather than “https://” (setting is only visible to the course builder). As a result, our browser has automatically blocked the video.
Of course, blocked content won’t always be this obvious…
Example 2
Once again, our course builder embedded a video using a link to insecure non-secure resources. The content has been blocked by the browser, yet the learner has no indication a video should be expected. For this reason, we highly recommend course builder’s builders always include a textual description for any embedded content in their course.
How do I
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Stop My Browser from Blocking Mixed Content?
Once our learner is aware content has been blocked, there are steps they can take to force their browser to display the hidden content.
To Prevent Mixed Content Blocking on Chrome
- To temporarily display mixed content, click the shield icon located in the address bar (pictured below)bar. When prompted, choose to allow loading of non-secure items.
To Prevent Mixed Content Blocking on Firefox
- To temporarily display mixed content, click the caution icon located in the address bar (pictured below)bar. When prompted, choose to allow loading of non-secure items.
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To Prevent Mixed Content Blocking on Microsoft Internet Explorer (10+)
- To temporarily display mixed content, click the “Show Show all content” content button, which is located at the bottom of the browser window (pictured below)window.
To Prevent Mixed Content Blocking on Microsoft Edge
- To temporarily display mixed content, click the shield icon located in the address bar (pictured below)bar. When prompted, choose to allow loading of non-secure items.
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To fully resolve the issue for all learners, course builder’s builders are strongly encouraged to update insecure non-secure URLs to use the HTTPS protocol.
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