Abstract: A method, system and program product for securing data written to a storage device coupled to a computer system. The method includes providing a detachable data security key device for controlling access to data written to a storage within a computer system and attaching the security key device to the computer system for enabling access to the data written to the storage. Further, the method includes detaching the security key device from the computer system for disabling access to the data written to the storage, wherein removal of the security key device from the computer system renders the data written to the storage unreadable. In an embodiment, the security key device includes an encryption key module coupled to the security key device for encrypting the data written to the storage and includes a decryption key module coupled to the security key device for decrypting the data written to the storage.