| D.to look into the case where hackers and thieves are the same people.
（3）He could go through anyones electronic mail or add to, change, distort or delete anything in the information stored in the computers memory.He could even take control of the entire system by implanting his own instructions in the software that runs it.He could shut computer to erase any sign of his ever having been there.
3.According to the passage, all the damages listed below could be done by a hacker EXCEPT
A.entering into computers illegally.
B.creating many electronic-age terms.
C.removing computer systems.
D.going through computer systems.Hacking, our electronic-age term for computer break-in, is more and more in the news ─ brainy kids vandalizing（肆意破坏） university records, even prank（搞恶作剧） about in supposedly safeguarded systems.
To those who understand how computer networks are increasingly regulating life in the late 20th century, these are not laughing matters.A potential for disaster is building: a dissatisfied former insurance-company employee wipes out information from payroll files（工资表）.A student sends out a “virus,” a secret and destructive command, over a national network.The virus copies itself at lightning speed, jamming the entire network ─ thousands of academic, commercial and government computer systems.Such disastrous episodes have already occurred.（4） Now exists the possibility of terrorism by computer.Fouling（破坏） a system responsible for air-traffic control at a busy airport, or knocking out the telephones of a major city, is a relatively easy way to spread panic.