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What tech nique was used by the Kiley Innovators employee to send information to the rivalmarketing company?

Lori is a certified ethical hacker as well as a certified hacking forensics investigator working as an IT security consultant. Lori has been hired on by Kiley Innovators, a large marketing firm that recently underwent a string of thefts and corporate espionage incidents. Lori is told that a rival marketing company came out with an exact duplicate product right before Kiley Innovators was abo ut to release it. The executive team believes that an employee is leaking information to the rival company. Lori questions all employees, reviews server logs,and firewall logs; after which she finds nothing. Lori is then given permission to search through the corporate email system. She searches by email being sent to and sent from the rival marketing company. She finds one employee that appears to be sending very large email to this other marketing company, even thoughthey should have no reason to be communicating with them. Lori tracks down theactual emails sent and upon opening them, only finds picture files attached tothem. These files seem perfectly harmless, usually containing some kind of joke. Lori decides to use some special software to further examine the pictures andfinds that each one had hidden text that was stored in each picture. What tech nique was used by the Kiley Innovators employee to send information to the rivalmarketing company?

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A.
The employee used steganography to hide information in the picture attachments.

B.
The Kiley Innovators employee used cryptography to hide the information in the emails sent.

C.
The method used by the employee to hide the information was logical watermarking.

D.
By using the pictures to hide information, the employee utilized picture fuzzing.

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