Complex sentence: These methods do not detect the presence of the Adblock extension directly, only the effects of the filters, and are vulnerable to continued updates to the filters, and by whitelist-filtering web scripts with an extension such as NoScript.
Split into simpler sentences: These methods do not detect the presence of the Adblock extension directly, only the effects of the filters. They are vulnerable to continued filter updates, and whitelist-filtering web scripts with extensions such as NoScript.