Due to increasingly advanced technology, the problem of computers being hacked or poisoned is becoming more and more serious. Therefore, due to the prevalence of smartphones and computers nowadays, the security of modern people's files is a pressing issue. iSafe is a remote encryption file transfer system. It can upload and encrypt any document that you think might be a security risk. The program utilizes knowledge of cryptography and transfer ports, so that once a file is uploaded, even if you change to a different computer, you can simply log in and view it at any time. This makes modern life more secure and convenient. There is no need to worry about losing some important files that cannot be retrieved if your computer or system is hacked.