Answer: The program is CryptoLocker.
CryptoLocker is a ransomware program that first appeared in September 2013. From that point until May 2014, the program utilized a trojan to targeted computers running Microsoft Windows and It was transferred using email attachments and botnets.
Positive effect:
Benefited the people at the top.
A flexible system making power and decision.
Allowed stability and security.
The lord had a unique relationship with his vassals.
Created an obligation for the powerful to help and protect the weak.
Negative effect:
90% of population were were commoners or peasants.
Serfs has no say in that time.
The kings were not in direct control of all their subjects.
Relied on gaining status through work and power.
The president uses mass media to gain support for policies.
