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I'm helping a friend update a non profit website written in SHTML, mostly. I added an SSL cert and is still showing as insecure. I've checked every image and external file and can't seem to find the error.

Is SHTML still valid? Or should I convert to HTML5 and rely on a .htaccess file to write all urls as https? I'm a little lost on this one.

#infosec #webdev