Changing a value in a cell to see what effect it has on values in other cells that are calculated using the value is said to be doing a

A(n) ________ refers to publishing personal information on the Web

A) tweeting B) posting C) surfing D) blogging

_________ matching scans incoming packets for specific byte sequences (the signature) stored in a database of known attacks.

Fill in the blank(s) with the appropriate word(s).