US continues to lead the pack, as spammers exploit unprotected
Sophos, a world leader in protecting businesses against spam and
viruses, has today published research on the top twelve spam
Sophos experts examined all spam messages received at the
company's global network of spam traps from January 2005 - March
2005. Based on the analysis, experts found that the United States
topped the "Dirty Dozen" chart once again, exporting an average of
35.70% of all spam during this timeframe.
The top spam producing countries are as follows:
|Position||Country||Percentage of global spam|
|3||China (incl Hong Kong)|
"Although the USA is responsible for producing more than a third
of all of the world's spam, its percentage contribution has
decreased," said Graham Cluley, senior
technology consultant for Sophos. "The percentage of spam sent from
American computers has fallen 12% since the start of the year
compared to other countries. ISPs enforcing policies to ensure they
do not knowingly provide network services to spammers, and a rising
awareness of the need to protect all computers from being hacked by
spammers has undoubtedly contributed to this trend."
"Last month, Sophos reported that more than 50% of the world's
spam came from zombie computers, which are PCs that have been
compromised by hackers or virus writers," continued Cluley.
"Businesses and computer users must protect themselves from
becoming a zombie by having up-to-date anti-virus software,
firewalls and Microsoft security patches."
Sophos recommends that businesses adopt a multi-layered defence
in conjunction with implementing a best practice policy regarding
email account usage. Users can also learn how to best minimise the
influx of unwanted email by following a few simple guidelines.