Ondrej Sevecek's English Pages

Your site still uses a SHA-1 signed certificate that expires beyond 1/1/2017. This certificate will not be valid and accepted by Windows, and all mainstream browsers starting 1/1/2016.

Please fix it before 1/1/2016 as this will break your site in mainstream browsers as of 1/1/2016 and potentially also your credibility as CEH :-)

Reference: See Chrome padlock warning before the url in chrome.