Patent ID: 7529539

Claim:
A security system comprising a control device to protect said information in a portable communication terminal having an information storage unit to store information, said control unit comprising: a user instruction accepting unit to accept a protection instruction to protect said information from the user of said portable communication terminal and a cancellation instruction to cancel the protection of said information; an authentication unit to authenticate said user of said portable communication terminal; an instruction notifying unit to notify said portable communication terminal of said protection instruction and said cancellation instruction when said authentication unit authenticates said user; and a providing unit to provide the security program to protect said information on said portable communication terminal, wherein said portable communication terminal comprises: a receiving unit to receive said protection instruction and said cancellation instruction from said control device; an information protecting unit to perform a process of protecting said information according to said protection instruction received by said receiving unit; a protection canceling unit to perform a process of canceling the protection of said information according to said cancellation instruction received by said receiving unit; a download unit to download said security program from said control device through an Internet; a program storage unit to store said security program downloaded by said download unit; and an executing unit to execute said security program when said portable communication terminal is activated.