anvas x 0 0 Question 18 1 pts What is the term for a calculation (using encryption technologies) based on the contents of a disk or file that are engineered so that even small changes in the source data will produce significantly different checksum results? cyclic random check number cyclic redundancy check number cyclic repetition check number random variable check number Question 19 1 pts Which of the following is a basic objective of surveillance, whether manual or electronic? Identify victims of the fraud Analyze how the money comes back in the form of assets Understand the cover-up or concealment of fraud Catch fraud at the theft act stage 6