Abstract: Methods and systems for blocking reception of digital content elements by devices are disclosed. These methods and systems comprise elements of hardware and software for, receiving an electronic communication including at least one digital document; determining the content type of the at least one digital document; based on the content type of the at least one digital document, modifying the digital content of the digital document so as to selectively disable functionality of the digital document; and, enabling the subsequent processing of the electronic communication including the at least one digital document with the modified digital content.

Abstract: To validate data, a plurality of strings that match a predetermined regular expression is extracted from the data. A validated subset of the strings is identified. To determine whether the validated subset has been falsely validated, it is determined whether the validated subset satisfies each of one or more predetermined criteria relative to the plurality of strings. In one embodiment, the subset is determined to be falsely validated if at least one of the criteria is satisfied. In another embodiment, the subset is determined to be falsely validated if all of the criteria are satisfied. The data are released only if the subset is determined to be falsely validated.

Abstract: To validate data, a plurality of strings that match a predetermined regular expression is extracted from the data. A validated subset of the strings is identified. To determine whether the validated subset has been falsely validated, it is determined whether the validated subset satisfies each of one or more predetermined criteria relative to the plurality of strings. In one embodiment, the subset is determined to be falsely validated if at least one of the criteria is satisfied. In another embodiment, the subset is determined to be falsely validated if all of the criteria are satisfied. The data are released only if the subset is determined to be falsely validated.