diff --git a/Dynamic-filtering:-Examples-of-usefulness-of-blocking-3rd-party-iframe-tags.md b/Dynamic-filtering:-Examples-of-usefulness-of-blocking-3rd-party-iframe-tags.md
index c172467..8ec982e 100644
--- a/Dynamic-filtering:-Examples-of-usefulness-of-blocking-3rd-party-iframe-tags.md
+++ b/Dynamic-filtering:-Examples-of-usefulness-of-blocking-3rd-party-iframe-tags.md
@@ -6,7 +6,7 @@ URL: <http://www.riskiq.com/resources/blog/jquerycom-malware-attack-puts-privile
 
 `iframe` are very often used by malware code on compromised web sites. The most recent example of this is [jquery.com](http://blog.jquery.com/2014/09/24/update-on-jquery-com-compromises/).
 
-The web site was compromised, and users of the site were served tainted web pages, which were causing a user's browser to download exploit kit from some remote servers. This was done 1st through a malicious 3rd-party `<script>`, which purpose was to dynamically create and embed a 3rd-party-sourced `<iframe>` on the page.
+The web site was compromised, and users of the site were served tainted web pages, which were causing a user's browser to download exploit kit from some remote servers. This was done first through a malicious 3rd-party `<script>`, which purpose was to dynamically create and embed a 3rd-party-sourced `<iframe>` on the page.
 
 Using 3rd-party-sourced `<iframe>` to inject exploit on a user's computer is quite a common technique. [Example](http://arstechnica.com/security/2013/10/hackers-compromise-official-php-website-infect-visitors-with-malware/), [example](http://www.wired.com/2013/08/freedom-hosting/), [example](http://blog.armorize.com/2011/07/willysycom-mass-injection-ongoing.html), etc.