文档介绍：综合B3U3小测答案
Part I
Section A
Directions: In this sect ion, there is a passage with several bla nks. You are required t no one bothered to lock their doors. There simply wasn t any crime to worry" about.
Amazingly, these happy times appear still to be with us in the world ' s biggest community.
new study by Dan Farmer, a gifted programmer, using an automated investigative program of his own called SATAN, shows that the own ers of well over half of all World Wide Web sites have set up homes without fitting locks to their doors. 11
SATAN can try out a variety of well-known hacking ( 黑客的)tricks on an Internet site 12 without actually breaking in. Farmer has made the program publicly available, amid much criticism. A person with evil intent could use it to hunt down sites that are easy to burgle (闯 入 行窃).
But Farmer is very concerned about the need to alert the public to poor security and , so far, events have proved him right. SATAN has done more to alert people to the risks than cause new disorder.
So is the Net becoming more secure? Far from it. In the early days, when you visited a Web site your browser simply looked at the content. Now the Web is full of tiny programs that automatically download when you look at a Web page, and run on your own machine. These programs could, if their authors wished, do all kinds of nasty things to your computer.
At the same time, the Net is increasingly populated with spiders, worms, agents and other types of automated beasts
designed to penetrate the sites and seek out and classify information. All these make wonderful tools for antisocial people who want to invade weak sites and cause damage.
But let' loosk on the bright side . Given the lack of locks, the Internet is surely the world biggest (almost) crime-free society. Maybe that is because hackers are fundamentally honest. Or that there curre ntly isn ' t much to steal. Or because val 恶意破 m( ) isn ' t much fun uni ess you have a peculiar dislike for someone.
Whatever