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1. ______ are viruses that copy themselves until filling up a computer's storage space?
WORMS

2. What are two types of “sneaky viruses” that are not designed to harm your computer but can still cause serious problems?
Spyware and adware

3.What are two ways a virus can infect your computer?
They can be hidden in infected files

4.What type of software is available to help prevent viruses and WORMS?
Anti-virus software and firewalls are powerful tools to combat viruses