In the USA, the TSA has greatly improved and is now only failing around 80% of tests compared to 95% a couple of years ago.
Does Airport Security Save Lives or Cost Them? - UCSD Guardian
Israeli security works but requires 3+ hours check in time and the government has to pick up 80% of ELALs security costs or the airline would go broke. Passengers are profiled and whilst everyone is thoroughly screened, a young Arab male wearing a bandana would be looked at more closely than a 70 year old rabbi. Intelligence officers interview passengers as part of the process.