[1] a stack can be used to recognize certain types of patterns. consider the pattern string1#string2, where neither string contains "#". the string2 must be the reverse of string1. write a program that reads strings until the user enters an empty string. the program should indicate whether each string matches the pattern. run: input a string: 1& a#a& 1 1& a#a& 1 matches the pattern input a string: 1& a#1& a 1& a#1& a does not match the pattern input a string: madamimadam#madamimadam madamimadam#madamimadam matches the pattern input a string:

Scenario: 1. victim opens the attacker's web site. 2. attacker sets up a web site which contains interesting and attractive content like 'do you want to make $1000 in a day? '. 3. victim clicks to the interesting and attractive content url. 4. attacker creates a transparent 'iframe' in front of the url which victim attempt to click, so victim thinks that he/she clicks to the 'do you want to make $1000 in a day? ' url but actually he/she clicks to the content or url that exists in the transparent 'iframe' which is setup by the attacker. what is the name of the attack which is mentioned in the scenario?