1-What measures (Operating system, application software, network, hardware, etc) are there in your computer to secure your data from hacking?

2-How often do you back up critical data files such as homework files? What type of device do you use for backing up files?

Where do you store the backups to ensure they wont be destroyed if a major disaster (such as a fire) destroys your computer?

Do you use online sites for file backups?