They have teams building filtering solutions and organizations that
reports spam to each other. I hope this will help.
http://securence.blogs.com/1/internet_filters/index.html
What is Internet Filtering?
Web or Internet filtering services are developed to provide
organizations with advanced web filtering technology to limit exposure
to security risks such as viruses and adware, while increasing
productivity and ensuring bandwidth for business related activities.
The vast majority of current web filtering solutions rely on
allow/disallow URL lists (first generation filters) or keyword
tracking filters (second generation filters). Best of breed Internet
filtering solutions use third generation Active Filtering Technology.
What's At Stake?
The primary issue with URL list based filtering technologies is an
inherent reactive nature in the filtering technique. The URL list
filter cannot accept any blocking action until each individual site or
domain is added to the block list. New or ?stealth? sites are not
blocked regardless of content. The process of finding target sites is
a time intensive-extensive process. Whereas, best of breed Internet
filters use Active Filtering Technology that relies on a complex set
of predictive modeling rules which read and understand content in
real time. These rules have learned to distinguish subtle differences
in content, creating higher accuracy without tremendous ongoing
overhead.
Pornography as a web content category is a prime example of the
reactive weakness in URL list filtering. The pornography industry
introduces thousands of new pornographic sites every day. Therefore,
the rapid environmental changes overwhelm URL list based filters,
creating gaps in the block lists, leaving the filter with marginally
accurate filtering and easy circumvention. Moreoever, keyword filters
are the antithesis to URL lists in there reliance on static meanings
of words. Any use of an inappropriate word will create a block page.
This creates tremendous over-blocking of legitimate information. For
instance, local governments and educational institutions have been
victims of this type of filtering. The solution for overcoming these
issues is through implementation of third generation Active Filtering
Technology.
Active Filtering is accomplished through leveraging highly advanced
Artificial Intelligence to evaluate any web page request. This
technology understands web page content in a fashion similar to human
comprehension. A web page is analyzed by many proprietary metrics that
include the size of a page, number of images, page links, and URL name
and content. Once all needed information is ?harvested? by the system,
the information is fed in to an expert system (AI based decision
generator), which then uses precompiled rules (knowledge base) to
identify the web page type and whether a web user can/cannot view the
requested web page. As a result, this filtering mechanism achieves
filtering results far superior to URL list based filters and keyword
blocking filters.
Internet Filtering Solutions
Securence Web Intelligent Content Manager is a fully integrated,
robust internet filters solution that offers highly comprehensive and
accurate web filtering. The Intelligent Content Manager is
next-generation, web content filtering technology designed to provide
the very best in internet access management. The Intelligent Content
Manager is powered by Securence Active Filtering Technology, which
discriminates between desirable and undesirable content in a fashion
similar to human comprehension. This breakthrough technology achieves
filtering results that are unsurpassed in today's marketplace. |
