e have the following publications available online:  Please note that you need Adobe Acrobat Reader installed on your system to view these. The Complex Universe of Identity Theft Effective, thorough protection is more than just locking up your data (PDF - 1.7 MB) Check Fraud Liability (PDF 80 KB) Check 21 Compliant Checks and Image File Size Requirements (PDF - 27KB) Security Features and Proper Warning Bands Help Avoid Holder In Due Course Claims (PDF - 130KB) Is Your Check 21 Implementation a Fraud Hazard? (PDF - 469KB) Protection Against Check Fraud (PDF - 70 KB) Check Fraud and Identity Theft Volume VII (2008) (PDF - 3.9 MB) ImageMask--Technology Protects Check Images Online (PDF - 258 KB)