How do you protect your PPC campaigns from Spytools?

I am not surprised that not one has replied to this post, you are entering into tricky territory here. Basically, you want to block the spy bots from your site. If you decide to make these changes, back up your .htaccess first, so you can easily roll back if something goes wrong.

Add this to your .htaccess on a new line:

<Limit GET HEAD POST>
order allow,deny
deny from 74.53.36.242
deny from 65.39.72.142
deny from 66.34.204.26
deny from 66.34.0.
deny from 66.34.255.
deny from keywordspy.com
deny from keywordspypro.com
deny from spyfu.com
deny from spyfoo.com
deny from foospy.com
deny from fuspy.com
allow from all
</LIMIT>

This blocks the most common spying domains and IP ranges.

Then add the following on a new line:

RewriteCond %{HTTP_REFERER} keywordspy\.com [NC,OR]
RewriteCond %{HTTP_REFERER} keywordspypro\.com
RewriteCond %{HTTP_REFERER} spyfu\.com [NC,OR]
RewriteCond %{HTTP_REFERER} foospy\.com [NC,OR]
RewriteCond %{HTTP_REFERER} fuspy\.com [NC,OR]
RewriteCond %{HTTP_REFERER} spyfoo\.com [NC,OR]
RewriteRule .* – [F]

This returns the 403 Forbidden Error code to the server when the referrer is one of the domains we are blocking. (Note: the Apache mod_rewrite module must be enabled on your server. If your host does not enable it by default, add at the top of your .htaccess:

RewriteEngine On

Now, if you want to be really paranoid, you can worry that your .htaccess file can be viewed by others. You can stop this by adding these lines, and CHMOD your .htaccess to 644 permissions:

<Files .htaccess>
order allow,deny
deny from all
</Files>

The defense described above is not perfect or complete and is not guaranteed to be permanent. If you want to be thorough, keep monitoring what IP ranges and domains are used by the spy sites, and monitor your logs for any suspicious bots.

Age old problem. No sooner a Superinvincible weapon exists,there's someonefiguring out a way... Best of luck

they tell people that have the tools what keywords they are bidding on.