Re: protecting email addresses on a web site

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On Nov 16, 2010, at 4:02 PM, Bastien Koert wrote:

> On Tue, Nov 16, 2010 at 3:36 PM, Grega Leskovšek <legrega@xxxxxxxxx> wrote:
>> I tried this:
>> <?php echo "<span
>> class=\"safety\">sss>a/<moc.liamg@xxxxxxxxxxx<\"moc.liamg@xxxxxxxxxxx:otliam\"=ferh
>> a></span>";
>> ?>
>> and css:
>> .safety { direction:rtl; unicode-bidi: bidi-override; }
>> for the address jocplus.doo@xxxxxxxxx
>> but I haven't managed it to display properly
>> Could someone please direct me, I believe if I put the
>> <a class="safety" href="mailto:jocplus.doo@xxxxxxxxx";>vicaversa</a>...
>> it does not really protect the email address, because in mailto: it
>> has to be as defined jocplus.doo@xxxxxxxxx
>> Thanks,
>> -- When the sun rises I receive and when it sets I forgive ->
>> http://moj.skavt.net/gleskovs/
>> Always in Heart, Grega Leskovšek
>> 
>> 
>> 
>> 
>> 2010/6/15 Ashley Sheridan <ash@xxxxxxxxxxxxxxxxxxxx>:
>>> On Tue, 2010-06-15 at 13:02 -0400, HallMarc Websites wrote:
>>> 
>>>> 
>>>> -----Original Message-----
>>>> From: Ashley Sheridan [mailto:ash@xxxxxxxxxxxxxxxxxxxx]
>>>> Sent: Monday, June 14, 2010 10:52 AM
>>>> To: Dotan Cohen
>>>> Cc: HallMarc Websites; David Mehler; php-general
>>>> Subject: Re:  protecting email addresses on a web site
>>>> 
>>>> On Mon, 2010-06-14 at 17:50 +0300, Dotan Cohen wrote:
>>>> 
>>>>> On 14 June 2010 15:36, HallMarc Websites <sales@xxxxxxxxxxxxxxxxxxxx>
>>>> wrote:
>>>>>> Another is a CSS solution where you type the email address backwards and
>>>>>> then use the CSS style declaration:
>>>>>> style="direction: rtl; unicode-bidi: bidi-override;"
>>>>>> 
>>>>> 
>>>>> How does that work with screen readers? How about copy-paste?
>>>>> 
>>>> 
>>>> 
>>>> I don't think there's an accessible way of doing this. Anything that
>>>> allows a screen reader to speak the email address would also be
>>>> susceptible to spammers email scrapers.
>>>> 
>>>> Thanks,
>>>> Ash
>>>> http://www.ashleysheridan.co.uk
>>>> 
>>>> 
>>>> 
>>>> Copy-n-paste just gives you the email address backwards; screen readers,
>>>> because we are using logical ordering and it is stored in memory the way we
>>>> expect to read it, will read it correctly.
>>>> 
>>>> I was not aware that email harvesters used screen readers. Do you have some
>>>> documentation I could read to get up to speed on this?
>>>> 
>>>> Marc Hall
>>>> HallMarc Websites
>>>> So many spammers, so few bullets...
>>>> 
>>>> 
>>>> __________ Information from ESET Smart Security, version of virus signature
>>>> database 5199 (20100615) __________
>>>> 
>>>> The message was checked by ESET Smart Security.
>>>> 
>>>> http://www.eset.com
>>>> 
>>>> 
>>> 
>>> 
>>> I didn't say the harvesters used screen readers. I'm saying that if
>>> something is in plain text that a screen reader can understand, what's
>>> to stop an email address harvester? It's not worth their time to analyse
>>> every image (think about where Google is with image searching right now,
>>> and they have a lot more resources at their disposal) but it is easy
>>> enough to read text in a web page. At a push, it's possible to believe
>>> that some might be using rendered CSS to see how an email is rendered.
>>> 
>>> Thing is, it's nigh on impossible to hide an email address. Use it once
>>> on a mailing list like this and it's there for the whole world to see on
>>> archive listings. I even though that my email wouldn't be found in
>>> a .pdf CV I'd made, but thanks to Google it is now!
>>> 
>>> Basically, it might not be worth the effort to hide email addresses, and
>>> instead see about setting up spam filtering at the server level. You
>>> don't have to download and filter it your end, and it saves on
>>> bandwidth.
>>> 
>>> Thanks,
>>> Ash
>>> http://www.ashleysheridan.co.uk
>>> 
>>> 
>>> 
>> 
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>> 
>> 
> 
> Why not just make a simple contact form and never show the address?
> 


A simple javascript can obfuscate the mailto: url and display text say of the form your.name at yourdomain.com

Tom


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