Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.javascript > #33374

Re: "www.exam" + "ple.com"

Show all headers | View raw

For your reference, records indicate that 
ram@zedat.fu-berlin.de (Stefan Ram) wrote:

>   IIRC, on some web pages, I saw JavaScript code looking like:
> 
> "www.exam" + "ple.com"
> 
>   . I guessed that this was an attempt to circumvent filter
>   programs who might have "blacklisted" certain strings (like
>   »www.example.com«) and search for them in the source code
>   and then possibly reject or rewrite the page.
> 
>   Have you ever seen something like this, and does my guess
>   about the reason to write a string in this way make sense?

People serving “hostile” web pages do often obfuscate their code in 
the way you describe (and even much more elaborate ways).  Another, 
non-hostile reason to do such a thing, especially for links, is 
because you want to prevent an (unsophisticated) spider from grabbing 
all your content.  Similarly, domain names for email addresses are 
sometimes obfuscated using JS like that so that it is more difficult 
for spammers to collect them.

-- 
"Also . . . I can kill you with my brain."
River Tam, Trash, Firefly

Back to comp.lang.javascript | Previous | Next | Find similar | Unroll thread

Thread

Re: "www.exam" + "ple.com" Doc O'Leary  <droleary@2017usenet1.subsume.com> - 2017-05-23 18:51 +0000

csiph-web