I think I understand your question. If you change the gas price correctly it shouldn't have any effect on the security, even if you change it manually you should be fine.
The gas price doesn't affect security at all. However it can mean the difference between getting confirmed in a reasonable 1 to 2 minutes or waiting hours or even days for it to confirm. Always, always, always check the current gas price before sending because your wallet is going to get this wrong 9 out of 10 times when there is heavy cycling in the prices.
I think I understand your question. If you change the gas price correctly it shouldn't have any effect on the security, even if you change it manually you should be fine.
The gas price doesn't affect security at all. However it can mean the difference between getting confirmed in a reasonable 1 to 2 minutes or waiting hours or even days for it to confirm. Always, always, always check the current gas price before sending because your wallet is going to get this wrong 9 out of 10 times when there is heavy cycling in the prices.