Backdoor Detecting?

I've been able to catch a couple backdoors in scripts I've downloaded, but is there anyway to make the process easier?

I've seen backdoor detector scripts before, are these actually good? Do they work?

Do any of you have experience using these scripts or have any tricks to finding backdoors?

Use crident.com backdoor scanner. You need a server but you can make a test server for free 24 hours

Use a modmenu in your serveur for detecet also backdoor

Just download SNTE I think any exploit menu won't work.