-Accidents like some one dropping a water bottle on the keyboard and natural disasters like earth quake.
They way to prevent this is to store data on a server in a different location. And Log out employees after a certain number of minutes of the computer sitting idle.
-Employees can unintentionally click link in there emails and get a virus. Or a disgruntled employee can intentionally post private information about the company. The way to protect against this is too limit access, use biometrics, and create certain time slots for employees to log into the database.
-Outsiders intruders can corrupt data and/or steal data The best way to prevent this is with firewalls and encryption on the VPN.
-Viruses and worms can corrupt data. Employees may check emails and open spam containing these. The best way to prevent this is with firwalls and regular computer scans to keep them clean.
-Links to outside businesses, such as when the employees are surfing the web or maybe another business affiliates may have their databases compromised by spyware. Cookies may be used to harmfully. You can use cookie killer software, and CAPTCHAs.