@Mudslideyo,

We do not normally provide details for security fixes and optimizations, as most of these fixes are relatively insignificant and only optimize some of our existing features. For Decos, there are also a lot of features that fall under this umbrella such as improvements to QoS and Parenal controls.

When there is a major vulnerability, such as A CVE being created, there will often be notices posted in the firmware indicating a fix. 

If you are aware of a current vulnerability, let our team know, or look for the official CVE which will indicate when a bug or issue was fixed via a firmware update.