3. The computer-implemented method of claim 1 , wherein the personal information corresponds to unredacted or unedited information contained in a credit report, wherein each of the plurality of redacted file templates is associated with a credit report template having a respective format, and wherein generating the detection rule comprises: specifying the portions of sent email messages to be matched to one or more of the plurality of credit report templates; specifying content from the portions of the sent email messages to be matched to content included in one or more of the plurality of credit report templates; specifying file properties of an attached file included in sent email messages that, when present, result in the attached file qualifying for comparison to one or more of the plurality of credit report templates; and specifying the minimum document exposure threshold between (i) content included in the portions of the sent email messages, and (ii) content included in each of the plurality of credit report templates, which results in the detection of a sent email message containing an unredacted credit report.
3. The computer-implemented method of claim 1 , wherein the personal information corresponds to unredacted or unedited information contained in a credit report, wherein each of the plurality of redacted file templates is associated with a credit report template having a respective format, and wherein generating the detection rule comprises: specifying the portions of sent email messages to be matched to one or more of the plurality of credit report templates; specifying content from the portions of the sent email messages to be matched to content included in one or more of the plurality of credit report templates; specifying file properties of an attached file included in sent email messages that, when present, result in the attached file qualifying for comparison to one or more of the plurality of credit report templates; and specifying the minimum document exposure threshold between (i) content included in the portions of the sent email messages, and (ii) content included in each of the plurality of credit report templates, which results in the detection of a sent email message containing an unredacted credit report. 4. The computer-implemented method of claim 3 , further comprising: comparing the content included in portions of the sent email messages as specified by the detection rule to content included in each of the plurality of credit report templates; and calculating, for each comparison made between the content included in portions of the sent email messages and content included in each of the plurality of credit report templates, an initial document exposure score, and wherein the initial document exposure score is a scaled percentage that indicates, for a higher percentage value, a greater similarity between the content included in portions of the sent email messages and content included in each of the plurality of credit report templates.