Overloading is covered under the Law, within the Road Traffic Act, Health & Safety at Work Act and The Road Vehicles (Construction and Use) regulations.
The road transport industry is very tightly controlled by rules and regulations meaning that training is often necessary. However this training/advice can often be in conflict with what is best practice in order to comply with the law.
Key hacking is when thieves attack built-in systems that can unlock a car when the key is nearby, without having to press a button on the fob or put a key in the lock. If close to the car, the key sends a short-range signal that tells it to unlock, even if it’s in your handbag or pocket. Car thieves have devised ways to scan for and hack the signal to give them access to some cars.