How to protect application code read from flash in STM32?

once i programmed my MCU then only one option ERASSE FULL CHIP and reprogrammed it How can i do this?

I am using ST-LINK V2 for programming and IDE KEIL & STLINK UTILITY.

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Senior III

STM32 MCUs have a readout protection feature, check the reference manual od your variant.

It is reasonable secure, as other MCUs in the industrial marked.

Consider the effect it will have on debugging, both for development and for field returns.

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