Yeah, they are good at what they do. You don't need them for home security however. They only detect gas leaks that are flammable in the house and don't help security.

it means to shut up or stop any info that may get leaked to the public, and dont leak it

Fluid leaks, security of battery, straightness of bars, pegs, levers and frame. Lights and signals

There's an easy way. Install the app called NetworkToolbox. Loaded with 24 powerful tools, it has an eye for security leaks and is designed to synchronize and analyze local and public networks.

https link itunes apple com/us/app/networktoolbox-network-scanning/id651691453?mt=8

There are many different servers in SA:MP which are 0.3x. It is best to get the up to date servers as they have new functions and fixed security leaks.