Directions: Read the passage given below and select the inference(s) that hold true based on the facts in the passage.

Passage:

People, not computers, create computer threats. Computer predators victimize others for their own gain. Give a predator access to the Internet — and to your PC — and the threat they pose to your security increases exponentially. Computer hackers are unauthorized users who break into computer systems in order to steal, change or destroy information, often by installing dangerous malware without your knowledge or consent directly if you are not protected by a firewall. Their clever tactics and knowledge help them access the information you really don’t want them to have.

Inferences:

I: Hackers have detailed technical knowledge about computers.

II: Firewall software help us to prevent hacking.

III: Hacking can be done by everyone.