[unisog] The Impact of Spam on your Institution
infosecurity at panam.edu
Mon Feb 16 16:45:48 GMT 2004
>> I have seen "expert" estimates ranging from 25% to 70%.
> That ratio depends on how much non-spam you get, so it should vary
> tremendously between sites, depending on how they use mail. This
> ratio suggests what an average user sees in the inbox, but does not
> measure how much is being thrown at them.
One more datum gathered from my own institution's first spam filter
test which we carried out this weekend:
These figures are for approximately 1 days worth of mail from Friday
around 5pm to Saturday around 4pm. This includes only mail received from
off-campus. This is a site with about 2000 staff and 10000 students.
By number of items:
By volume of disk space used:
I guarantee the figures to be at least 90% accurate. I suspect they
are closer to 98/99% accurate but until we get some user feedback on
the efficacy of the spam filter, I can't prove it!
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