- Your download link comprises of two parts: the file identification (file ID) and the filename. The file ID is assigned by RapidShare and is unique. The filename is assigned by you before uploading. Valid characters are 0 to 9, A to Z, underscore (_), minus (-) and dot (.). Invalid characters are replaced automatically by an underscore.
- Assumption: The file ID has 8 digits. It offers 108 = 100 million possible character combinations. If your filename is 10 characters long, there are 3910 = 8.140.406.085.191.601 or 8 quadrillion possible character combinations.
- If a person wants to guess the download links, he/she has to find out both combinations. In our example, he/she would have to choose the correct filename from 108 * 3910 =8,140,406,085,191,601 or around 8 quadrillion possible character combinations.
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How secure is the download link?