Using Attack Tree in Egypt Aircraft Incident 

Drawing the attack tree for fault analysis to understand what is the possible scenario to recognize what may happen for the Egypt Air flight from Paris to Ciro in the Mediterranean sea.

After compiling all Scenario, We can define a list of leafs which is

1. Suddenly crash
2. Aircraft fault: Not possible or Emergency signal was enables
3. Missile: Possible but required state level capabilities 
4. Bomb load in Paris
5. Bomb loaded in the previous trip from Cairo to Paris 
6. Snatcher: in this case it will be easy to report Emergency signal

After filtering all of this; We can reach to the following analysis based on history of incident

1. Bomb loaded in the previous trip from Cairo to Paris
2. Bomb loaded in Paris
3. Missile
4. Suddenly crash