The exemplary embodiment of the present invention will provide computer systems and methods for protecting the security of processing for customization of computer-based value-bearing items, such as, for example, securing processing of exemplary image-customized computer-based postage label 1 in an exemplary embodiment of the present invention, as depicted in FIG. 1. The exemplary embodiment of the present invention will further provide computer systems and methods for securing computer-based value-bearing items, such as, for example, securing image-customized computer-based postage label 1 as depicted in FIG. 1. With reference to FIG. 1, the exemplary customized computer-based postage label 1 will bear an image 2 that would be provided by a corresponding user, namely by the user that orders the customized computer-based postage label. The user may provide image 2 in an electronic form, such as by uploading a digital representation of image 2. In a variation of the exemplary embodiment, a user could alternatively provide a hardcopy image. The exemplary customized computer-based postage label 1 will bear a human-readable indication of the country 4 for which the postage is approved. The exemplary customized computer-based postage label 1 will also bear a human-readable indication of an amount of postage 5. The exemplary customized computer-based postage label 1 will also bear a human-readable identifier (such as a serial number) 6 that will uniquely identify the particular customized computer-based postage label. The exemplary customized computer-based postage label 1 will also bear a machine-readable set of information 7.