IN CONTEXT: Many users favored Amazon's earlier Fire TV devices over Apple TV and Roku because Amazon's Android-based Fire OS supported unofficial Android apps – though that same openness also drew accusations of enabling piracy. Now, as Amazon shifts to a more closed operating system, one of its executives is leaning on a familiar defense: "protecting users."

In a recent interview with Cord Busters, Aidan Marcuss, Amazon's VP of Fire TV, warned that sideloaded apps can carry malware and enable piracy. He stopped short of explicitly linking piracy concerns to the decision to restrict sideloading on newer Fire TV devices, but the connection is hard to miss.

The change came with Amazon's switch to a new operating system last fall. Because the company's previous platform, Fire OS, was forked from Android, it could run apps from outside Amazon's app store, the Google Play Store, or any other source, giving Fire TV sticks access to a broader range of software than Roku or Apple TV.

That changed with the budget-priced Fire TV Stick 4K Select, unveiled last September and released the following month, which introduced Amazon's new Vega OS. The Linux-based system improves performance and supports more modern apps, but limits users to Amazon's own app store. According to the company's developer website, Vega is set to become the standard across future Fire TV sticks.