| Re: Browser fingerprinting? [message #182793 is a reply to message #182789] |
Fri, 13 September 2013 13:35   |
Jerry Stuckle
Messages: 2598
Registered: September 2010
Karma:
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Senior Member |
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On 9/13/2013 1:49 AM, Michael Vilain wrote:
> In article <l0tvb5$2ot$1(at)dont-email(dot)me>, Fiver <numeralfive(at)gmail(dot)com>
> wrote:
>
>> On 2013-09-12 23:56, Gilles wrote:
>>> I'd like to find some good PHP code that does what Panopticlick does,
>>> namely uniquely identify a user's browser even when they connect as
>>> anonymously as they can, ie. either in incognito mode or by running a
>>> browser in a virtual host:
>>>
>>> www.lifehacker.com/5458513/panopticlick-shows-how-easy-your-browser-is-to-t r
>>> ack
>>>
>>> The goal is to keep trolls away from a site.
>>
>> In that case, forget it.
>>
>> The Panopticlick demo isn't intended as something to emulate in
>> practice, but rather as something to be aware of. It works best on
>> visitors who don't know or don't care about how much information they
>> divulge. When I visit the demo site with all of the default plugins
>> enabled, I'm a unique snowflake. On the other hand, if I wanted to hide,
>> I'd turn plugins and scripting off for that site, and maybe go through a
>> proxy, and then I'm just one in a million.
>>
>> If you target your troll too closely, he can trivially evade your
>> filter. If your constraints are too loose, you'll hit some legitimate
>> visitors. There's just no way you can win this battle by fingerprinting
>> the troll.
>>
>> Forget it.
>>
>>
>> regards,
>> 5er
>
> I kept getting humans evading my CAPATCHA and sending me marketing SPAM
> through my web site's contact form. After a while, I would just go
> through the web long and find the IP address that completed the form and
> block the entire subnet. So far, entire swaths of China, South America,
> and Russia can't view my site. Their connection is refused based on
> their IP address.
>
> A broad brush, I know, but I haven't had any marketing emails to improve
> my SEO score, improve my site, or better my mortgage interest rate.
>
You probably need a different CAPTCHA. Many of the commonly available
ones have been broken.
I wrote my own and my spam rate has dropped to zero.
--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex(at)attglobal(dot)net
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