If you’re signed up for something on a webpage, bought something online, or left a comment on the Internet, you’veprobably had to decipher a CAPTCHA. CAPTCHAs are those distorted, squiggly letters in a box that you need tore-enter in order to execute your task. They were developed as a method to deter spammer’s bots, mass mailings andpersonal information theft. For the past twelve years they’ve worked well but they need to become more challenging, asspammers have gotten better at creating software to interpret them.
      As CAPTCHAs become more difficult, legitimate Internet users are struggling more with deciphering 97% to 92%. So,alternative CAPTCHAs have been developed to increase web users’ success rate in deciphering. Images, such as cats,dogs, cars, and houses are now used as well. Users must identify how many of a particular item is seen, what color theyare, or which direction they face. Sadly, spammers have also taken advantage of impoverished economies to solveCAPTCHAs. Spammers pay Indians and Bangladeshi $2 a day to solve CAPTCHAs.
6. What has happened as CAPTCHAs have gotten more challenging?
(A) Cyber crime has become less prevalent.
(B) Solving them has become more difficult for users.
(C) Websites have required multiple CAPTCHAs.
(D) More computer users have downloaded viruses.