QUESTION 18 Which of the following is an example of an integrity violation of e-commerce security? 1. A website is not actually operated by the entity the customer believes it to be. 2. A merchant uses cutomer information in a manner not intended by the customer. 3. A customer denies that he is the person who placed the order. O 4. An unauthorized person intercepts an onlie communication and changes its contents. QUESTION 19 Beebone is an example of which of the following? O 1. worm 2. botnet 3. phishing 0 4. hacktivism QUESTION 20 Which of the following dimensions of e-commerce security is not provided for by encryption o 1. confidentiality 2. availabilty message integrity o 4. nonrepudiation