故意危害Internet安全的主要有三种人，分别是（） A: Hackers、Grackers、Foreigners B: Grackers、Foreigners，Vandals C: Foreigners、Vandals、Hackers() D: Vandals、Hackers、Grackers

What has not been attacked by hackers?

Hackers are one of the great threats to the security of e-businesses.

The hackers pry into the privacy of celebrities in order to destroy them.

We may ________ that hackers from outside of the company present a more serious threat to their security system.

Hackers<br/>are one of the great ( ) to the security of e-businesses. A: threat B: threats C: treat D: treats

We can _________(推断,推定)from the report that hackers from outside of the company present a more seirous threat to their security systems.

"Somebody" in "somebody released some tigers" in Par A: 5 refers specifically to_________.A. Internet providersB. Internet usersC. routersD. hackers

We may ________ that hackers from outside of the company present a more serious threat to their security system. A: infer B: refer C: prefer D: grant

WhichofthefollowingisresponsibleforMOSTofthesecurityissues?下列哪个角色存在最多的安全问题?（） A: Equipmentfailure设备故障 B: Personnel内部人员 C: Outsideespionage外部间谍 D: Hackers黑客