Spam accounted for 96.63 per cent of all email scanned in March, making it
the third consecutive month that junk mail levels have remained steady.
However, security experts at SoftScan noticed a sudden 40-45 per cent drop in
the amount of spam stopped at the first level of protection, the reputation
filter, in the last few days of March.
"Although there was a significant drop in spam levels at the reputation
filter, we did not see any drop at our main spam filters," said Diego d'Ambra,
chief technology officer at SoftScan.
"This leads us to believe that spammers are cleaning up their infrastructure
and are possibly starting to stop sending spam that will be automatically picked
up by reputation filters.
"In some respects the drop in spam is good news, but it will not be long
before the spammers reveal their next tactic to replace the 'missing' junk mail.
"
SoftScan reported that virus levels remained typically low during the month
at just 0.07 per cent of all email scanned.
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