Many security flaws have been discovered in Qualcomm Snapdragon processors. As per the report, the flaws arise from the Hexagon SDK used to prepare DSP related code and let hackers spy on Android devices as well as steal data from them. DSPs are SoC units which are responsible for image processing, telecommunications and audio signal receptions. Refer to these links for more information:
Now, my question to those people, who just for the sake of a little gain in performance, signed a petition to ban Exynos, where will you go now? I believe you will not buy Snapdragon after this, and Exynos is the option if you buy Samsung devices. Will you still buy Snapdragon devices? Or will you gain some sense and buy devices which have DSP security in their processors? Comment your thoughts down below.
These are hardware level issues, cannot be addressed via software updates. Sometime ago, Intel had similar issues, which are fixed in the current generation of CPUs, but the older generations are still vulnerable, and Intel could not do anything. This issue can be masked, but cannot be removed, which means that these devices will be at risk, no matter what Qualcomm does.
I said that these are not proper "fixes", these are just closing the backdoors which lead to these flaws and trying to prevent hackers from attacking, but these hardware level issues cannot be addressed so simply, you have to make new CPUs to resolve these. Hackers can break the security and access the backdoors.