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Operators have a responsibility to users to adopt accurate spam filtering technologies

發佈時間:3/6/2017    來源:HKTC   作者:Lachlan Colquhoun


The blight of spam can – sometimes unfairly - impact the IP
and domain name system (DNS) reputations of individual and
business internet users. Service providers need to be vigilant in
helping legitimate users avoid being blocked and blacklisted, and
need to be proactive in managing email security and helping to
protect IP and DNS reputations. If they fail in this, their own reputations
can also suffer, and with it their business and that of their
customers.
On any given day, global email volume can reach as high as
600 billion individual emails. Not all of these are legitimate communications,
of course. A large percentage are direct marketing
blasts or advertising. Then there is phishing and malware, which
can do many things including hijack someone’s IP address and
use it to send spam.
Email continues to be the main attack vector on the internet,
and volumes have increased exponentially in the era of cloudbased
services and through the development of e-commerce and
marketing.
With the growth of mobile devices, the number of end points
has also exploded, and is set to go through another wave of growth
with the advent of 5G networks and the Internet of Things (IoT).
But at the same time, many service providers have done little
to update their email communications security, which remains the
bedrock of B2B and B2C communication.
Spam, spam, spam, legitimate emails and spam
According to Cisco’s email and web traffic monitoring network
SenderBase, spam accounts for as much as 85% of daily global
email traffic. Of the balance, just under 15% is legitimate traffic
while only a small percentage – 0.012% on a typical day – is actual
malware.
Due to its sheer volume, spam is the creator of major problems
as it clogs up the internet with unwanted traffic.
But while much spam is correctly blocked by email clients,
some individuals, businesses and service providers find that legitimate
emails which one day were sent and received successfully
are not being delivered the next day, or are suddenly tagged as
spam.
Sometimes this is justified. A business may be sending mass
email blasts to a database where a significant number of addresses
are obsolete or invalid.
They can also be sending to the so-called “honey pot” - addresses
which do not belong to real people, and which exist only as
traps for senders who have acquired them through web scraping.

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