One way to categorize types of file encryption is according to the amount of data you need to protect: full disk, virtual disk and file and folder. Encryption software rearranges a file’s data bits to. "Using a notification structure similar to our new wireless data plans, we’ll proactively notify customers when they exceed 65%, 90% and 100% of the monthly usage allowance," AT&T tells us. The compan. Compact Disc Digital…