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No mention of how recent the files are (last modified dates etc.), though there is mention of a superceded ISMS grading convention, and the fact that the contents were in the single-digit GBs - so for all we know, this USB stick could be a few years old and the real-world risk very minimal (if any) - of course, it could also be bang up to date and a major disaster - we just don't know at this point.