for the past few days now, i have been working on my dream project, trying to design how my future corporate company portal will look like. i already sketched down my guidelines on how the system planning, my systems analysis and the disgn will look like but i doont know how to tackle the issue of data security and system operation and support. pls help

For data security, avoid sql injection by using stored procedures, data validation, and any other means that you can expend. Also, use secure socket layers for any sensitive information that the user may view or enter and use secure shell instead of ftp for moving your files to and from the server.