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SECURITY
Content Filtering
The key to content filtering technology is its
ability to monitor and filter content from the Internet, chat rooms,
Instant Messaging, e-mail, e-mail attachments, Word, PowerPoint,
and all other Windows applications. Additionally, content filtering
will only report on violations identified in those applications.
Content filtering is accomplished using a library of terminology,
words and phrases that are compared to those emanating from the
content of the Internet browser and Windows applications. When accessing,
receiving, or sending content, the data is analyzed against this
library, and if a match occurs the data can be filtered, captured,
blocked, and the application closed, or any combination thereof.
Content filtering requires an agent on each workstation
that checks the content data to determine whether it violates the
organisations Acceptable Use Policy. If captured content data violates
the Acceptable Use Policy, a capture of the violating screen is
stored on the server with user, time, date, application and violation
stamp for reporting and review purposes.
The utilization of a library of explicit terminology
allows an organisation to focus on specific content that violates
policy. For example, the pornographic and sexually explicit library
contains all data specific to this Industry. Content filtering technology
allows those words that used within a scientific or medical context
to pass through the filter without causing a violation to be reported
or logged. This same library approach also enables an organisation
to monitor for unexpected or unauthorised flow of confidential information.
Advantages:
- Content filtering allows filtering in all applications including:
Internet, chat, instant messaging, e-mail, e-mail attachments,
Word, PowerPoint and all other Windows applications. The software
is integrated at the Operating System level so that the content
in any windows event are compared against the libraries to determine
if the content is inappropriate, such as opening files in explorer.
- Content filtering fills the largest security hole in a company’s
network. Statistics (CSI) state that 70 to 80% of all security
breaches occur from within the organization. Content monitoring
can monitor for and stop the accidental or intentional disclosure
of a companies Intellectual Property, confidential information
or other non public content, that can be accessed or disclosed
electronically.
- Working in conjunction with Human Resources training and Acceptable
Use Policy deployment, the Acceptable Use Policy informs the
employee of what is expected from them as a computer user, while
the content monitoring/filtering monitors and reports on compliance
thus changing a computer user’s behavior by making them responsible
for adhering to the organizations Acceptable Use Policy and
computing activities.
- Content filtering uses screen captures of each violation with
user name, date, time, application and violation stamp, to assist
as part of a solution to provide the forensic data needed to
protect the company.
- Content monitoring is ideal for establishing an employee awareness
program. When inappropriate data is discovered, organizations
can choose to make users aware of the policy or notify employees
by blocking the offensive content.
- Utilization of the Policy Central application results in full
disclosure of the organization’s policy to all employees so
it remains non-repudiated.
- Does not require the daily updates to keep the database effective
and current.
- Content filtering does not filter out the good content with
the bad. Content filtering libraries have been developed to
distinguish the difference between pornographic and sexually
explicit material vs. material that is scientific and medical
in nature. Content filtering also eliminating the need to block
out vast amounts of educational material to stop small amounts
of pornographic material found on a particular site.
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