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Re^2: Is data in RAM insecure, or am I just paranoid?

by lhoward (Vicar)
on Jul 16, 2004 at 12:49 UTC ( #374982=note: print w/replies, xml ) Need Help??

in reply to Re: Is data in RAM insecure, or am I just paranoid?
in thread Is data in RAM insecure, or am I just paranoid?

Data in RAM isn't as secure as it seems. Even if you never store a piece of data on disk it can end up on disk as part of your swapfile for months and years if the page in memory its in happens to be swapped out. Perl variables (I believe) also do not guarantee erasure. Even simply reassigning the value of a variable or undefing it does not guarantee that its previous value is gone from memory. This problem just gets worse when you're dealing with more complicated perl constructs (hashes and arrays)
$a=qw{foo}; $a=qw{bar};
"foo" may still exist in memory somewhere L

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[Corion]: marto: A rough week comes to an end?
Corion has to finish off some test tickets and hopefully close them. Also I have to prepare some information for the tax people on the weekend :-/
[marto]: it feels like 2 weeks :)
[Discipulus]: sane dots for your weekend marto!
[choroba]: My week was hectic as well, and so will be the next several ones...
[Corion]: Sane Dots Supplies - your brand manufacturer for satisfying experiences!
[choroba]: preparing the trip to Vietnam + buying a new car = enough fun

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