computer security

a) IT security have a number of general goals that you almost always look at when you are evaluating and/or implementing some controls to increase security. These goals are summarized in the CIA model. Describe this model. b) IT Security threats are constantly changing. Some of the recent threats we have seen are: - Ransomware attacks - Social engineering attacks where you try to make people authenticate (e.g. with BankID) on Internet - Cryptocurrency botnets Give a short description of each of these threats and what the purpose of them are. (6+6 p)