########## Begin - Rewrite rules to block out some common exploits
    #
    # Block out any script trying to set a mosConfig value through the URL
    RewriteCond %{QUERY_STRING} mosConfig_[a-zA-Z_]{1,21}(=|%3D) [OR]
    # Block out any script trying to base64_encode crap to send via URL
    RewriteCond %{QUERY_STRING} base64_encode.*(.*) [OR]
    # Block out any script that includes a < script> tag in URL
    RewriteCond %{QUERY_STRING} (<|%3C).*script.*(>|%3E) [NC,OR]
    # Block out any script trying to set a PHP GLOBALS variable via URL
    RewriteCond %{QUERY_STRING} GLOBALS(=|[|%[0-9A-Z]{0,2}) [OR]
    # Block out any script trying to modify a _REQUEST variable via URL
    RewriteCond %{QUERY_STRING} _REQUEST(=|[|%[0-9A-Z]{0,2}) [OR]
    # Block out any script that tries to set CONFIG_EXT (com_extcal2 issue)
    RewriteCond %{QUERY_STRING} CONFIG_EXT([|%20|%5B).*= [NC,OR]
    # Block out any script that tries to set sbp or sb_authorname via URL (simpleboard)
    RewriteCond %{QUERY_STRING} sbp(=|%20|%3D) [OR]
    RewriteCond %{QUERY_STRING} sb_authorname(=|%20|%3D)
    # Send all blocked request to homepage with 403 Forbidden error!
    RewriteRule ^(.*)$ index.php [F,L]
    #
    ########## End - Rewrite rules to block out some common exploits