My planned build
CPU                Intel I5 13400F                                899 ( viewnet)
Motherboard Gigabyte b760m aorus pro ax ddr5 829 (shopee Price)
Memory        Klevv bolt V DDR5 6000m/t CL30 (2x16 GB) 511.5  ( found this on shopee , Taiwan Brand very attractive price with low latency not sure about the quality, any idea on this )
M.2 SSD        Crucial 5 plus 1 TB                        379 (shopee price)
Graphic Card Sapphire Pulse Rx 7600                1275  (shopee Price) not playing too much  game , I'm happy with 1080P
PSU          550W                                                0 (already have it as my spare PSU)
PC Casing  need suggestion                                200 ( need suggestion for MATX casing below 200)
CPU cooler        ID-COOLING SE-224                          85 (shopee)
                                                                          total  4178
Planned budget around 4000, already over a little bit ,  i also considering to swap the CPU to  Ryzen 5 7500F and Gigabyte b650m aorus pro ax board .
Any suggestion for PC casing and hardware adjust ?

Gigabyte has fixed that long ago:
https://www.bleepingcomputer.com/news/secur...security-flaws/

Sure, if you want you can always audit its code
But really though most modern CPUs already had a backdoor built in (see ME/PSP) - if you are that worried about backdoors you might as just well not use any modern PC