Page regression: Yet another email hiding technique?

[aautem]

Page URL:

https://lea.verou.me/blog/2009/11/yet-another-email-hiding-technique/

Did this page work in the previous website?

No

What issues do you see?

Broken URLs

Description of issues

The "here’s an extensive article on the subject" link leads to a 404 Not Found page. Link points to http://www.csarven.ca/hiding-email-addresses but ends up at https://270a.info/hiding-email-addresses.

Looks like the issue is the "www", when I go to https://csarven.ca/hiding-email-addresses instead it works.