# Part 8 - Update (**OTA**)

## Abstract

Updating applications and firmware is essential for the development of new
features and even more to fix security bugs.
However, if a malicious third party manages to alter the content during
transport, it could
alter the functioning of the system and/or applications. The security of the
updates is therefore a critical point to evaluate in order to guarantee the
integrity, the confidentiality and the legitimacy of the transmitted data.

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## Acronyms and Abbreviations

The following table lists the terms utilized within this part of the document.

Acronyms or Abbreviations | Description
------------------------- | -------------------------------------------------------------------------
_FOTA_                    | **F**irmware **O**ver **T**he **A**ir
_OTA_                     | **O**ver **T**he **A**ir
_SOTA_                    | **S**oftware **O**ver **T**he **A**ir
_TUF_                     | **T**he **U**pdate **F**ramework