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- Newsgroups: comp.security.misc
- Path: sparky!uunet!cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!uchinews!machine!chinet!ignatz
- From: ignatz@chinet.chi.il.us (Dave Ihnat)
- Subject: Re: COMPUTER DISKS THRU AIRPORT X-RAY ? ASAP
- Message-ID: <1992Jul28.171445.2205@chinet.chi.il.us>
- Summary: Probably no harm; discussed to death in other groups
- Sender: Dave Ihnat
- Organization: Chinet - Public Access UNIX
- References: <15844@pitt.UUCP> <pkershaw-270792112759@192.94.50.51>
- Date: Tue, 28 Jul 1992 17:14:45 GMT
- Lines: 33
-
- In article <15844@pitt.UUCP>, ansst11@icarus.lis.pitt.edu (Andy Solomon)
- wrote:
- > Can computer disks with data on them go thru the
- > airport security x-ray machines.
-
- This has been discussed to death in other groups, esp. comp.sys.laptops.
- The general consensus is that you stand little or no chance of loss due to
- X-rays; this has been determined both by a tremendous amount anecdotal evidence,
- and the fact that there was a study (by NBS? I can't recall) which attempted
- to resolve the issue, and indicated no X-ray damage at levels higher than those
- encountered in even poorly-maintained airport machines. On the other hand,
- many of both the X-ray machines and the metal detectors can produce powerful
- EM-fields (from power supplies, etc.) that *can* scramble data. It is
- conceivable that even though going through the X-ray machine would do no damage,
- collateral fields in the machine could. Similarly, walking the media through
- the metal detector is not necessarily a good idea.
-
- You've several choices; first, you can trust the machine. Anecdotal evidence
- indicates that you stand little chance of data loss. You can request hand-
- inspection of the machine and disks; simply be careful not to hand them around
- the X-ray cabinet or metal detectors in such a manner that you could expose
- them to magnetic fields. You may get shielded bags for the disks, machine,
- or both (although be aware that if the shielding is lead foil, it won't do
- anything for EM protection), although this probably assures a hand inspection
- after going through the X-ray machine. (You should have seen the response a
- friend got when a ranked set of lead-foil paint tubes went through and looked
- like the magazine from a large-calibre weapon...)
-
- Hope this helps,
-
- Dave Ihnat
- ignatz@homebru.chi.il.us (preferred return address)
- ignatz@chinet.chi.il.us
-