as my colleague explained, the .tw domain is owned by Telerik, so the site you visited is indeed not malicious at all. However, since the content it showed was the same as the one for http://www.telerik.com and we only have a certificate issued for the .com (and not for the .tw) domain, you received a security warning notifying you of the domain name mismatch. In order to avoid such confusions in future, we implemented a redirect that could allow clients to land on the http://www.telerik.com official site instead of the .tw one.
Please excuse us for this temporary inconvenience!
All the best,
the Telerik team
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