One
of the most common used programs for protecting
your images and webpages from being stolen
is weblockpro.com
but read below first it may not be the best
option after all.
Abstract
A website attempting to hide its HTML becomes
inaccessible to 30% of its visitors, loses
its ranking in search engines, and only
delays crackers by seconds.
How
code hiding techniques work
Code hiding techniques come in two parts:
- A
JavaScript hack tries to prevent users
using the right mouse button (combined
with frames, this is supposed to prevent
the user seeing the source code)
- A
large section of JavaScript generates
the code on the fly from an encrypted
version (so even being able to see the
source code shouldn't help)
Problems
for legitimate users
30% of internet users have JavaScript turned
off. Some are paranoid and don't trust any
active content. Others are fed up with pop-up
windows, and would rather turn off JavaScript
then buy a pop-up blocker (or download a good
browser that blocks pop-ups). Some are
using devices that don't support JavaScript
(for example, mobile 'phones), or using a
non-JavaScript browser by choice. Whatever
the reason, these visitors cannot access the
site.
A 'solution' is to use the <noscript>
tag for unencrypted content. However, this
can only contain a cut-down version of the
page's intended content, otherwise there would
be no point in using code-hiding techniques.
Page authors will then have to maintain two
copies of the information on the page.
Problems
for search engines
Search engines have the same problems as non-JavaScript
users, and only see the cut-down unencrypted
version, leading to lower rankings. Much more
seriously, search engines are wary of sites
that present the user with different information
from that the search engine saw. Search engines
are getting better at detecting these 'cloaked'
sites and frequently remove them from their
indices. By using code-hiding techniques,
a site may prevent itself from becoming listed
in search engines.
No
problems for crackers
Code-hiding techniques only delay crackers
by seconds. Any decent browser (for example,
Mozilla)
will have an option to view generated content,
so the hiding techniques have no effect whatsoever.
Even if the cracker only has Internet Explorer
available, it only takes second to get around
code-hiding techniques.
