Ensuring Data Integrity (Correct and Safe)

Back Up Techniques
    -Back ups must be regular and on a schedule
Virus Protection Facility
    - A firewall monitors your own network and block unauthorized acces 

       from outside your computer, if a virus does get through anti virus 

       software can remove it form your computer.
Frequency of Saving
   - power cuts can stop you keeping your memory or computer because 

    you have not saved it or do not save frequently. Short term power 

   cuts still allow the system to keep running for at most around a week
UPS or Surge Protector
   - If a power surge happens it protects your computer