In Fight Against Spam, the
Move to IPv6 Only a Problem for Inferior Filters
SAN FRANCISCO - March 24, 2011 - If your
spam filter can't handle the move to IPv6, you need a new
That's the message from Mailshell, the leading
provider of Internet security engines for OEMs, in response
to other software vendors' claims that the upcoming move
to IPv6 threatens spam filters' efficacy. Filters relying
primarily on IP blacklisting may be adversely affected by
the move to IPv6 since the massive volume of new IP addresses
will enable spammers to use each IP only once, thereby defeating
the blacklists. Some vendors have warned their customers
to expect decreased detection rates, and are warning ISPs
initially not to accept email from IPv6 addresses
except from their own customers. The switch to IPv6, creating
space for vastly more IP addresses than the IPv4 system
currently in use, has been planned and expected for years.
IP Blacklisting is among the most common tactics
among spam filters. However, no single technique has emerged
as fool-proof in the fight against spam. In fact, the need
to respond to spammers' ability to adapt their techniques,
and morph their campaigns to circumvent spam blockers, has
driven filtering technology innovation over the last ten
"Customers don't have to accept inferior results
simply because their filtering vendor remains unprepared
for IPv6," said Eytan Urbas, vice president at Mailshell.
"Spammers' change their techniques almost every day and
vendors with a rigid, dogmatic commitment to IPv4 blacklisting
are simply unprepared. We've always advocated a mathematics-driven,
statistics-based approach to the problem, rather than simply
an ever-growing IP blacklist.".
Mailshell's spam filtering engine combines
a small software library with the power of LiveFeed, a fast,
reliable, and secure cloud-based data service. LiveFeed
quantifies traffic reputation via advanced statistical models.
Unlike other reputation services that provide only a binary
'good' or 'bad' rating, LiveFeed's algorithms provide granular
trust ratings for dozens of attributes, not just IP addresses,
with automated adjustments over time as reputations change.
By focusing reputation on mathematical models, rather than
simply an 'IP black list' approach, LiveFeed provides more
accurate, highly scalable detection.
LiveFeed uses 61 secured data centers in 24
countries on six continents, to ensure minimum latency and
guaranteed 100 percent uptime. Mailshell has more than 11
years of experience in cloud computing-based security and
LiveFeed handles more than 10 billion queries per month.
About Mailshell: Mailshell (www.mailshell.com)
is the leading provider of Internet security engines for
OEMs, including Internet traffic reputation, anti-spam,
anti-phishing, URL filtering and DNS security. Mailshell's
software helps its global network OEM partners, including
McAfee, CA, Check Point, ESET, AVG, Avast, NETGEAR and others,
generate new revenue, up-sell existing products to new customers
and minimize related engineering and support costs. Follow
Mailshell on Twitter at http://twitter.com/mailshell.
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