Attacks against your computer can always delete the data on it or modify it without your knowledge. In order to protect them against loss, destruction and unwanted changes, you should secure your data regularly. Even if you increase your data and system security by implementing the measures described here, 100% protection can never be guaranteed.
The SCC's centralized backup is performed on a regular basis only to your network drives, but not to the local drives on your computer. You should store important data on network drives or perform additional local backup on portable storage devices.