"The 404 Not Found page tells you that you’ve hit a broken or dead link – except when it doesn’t," says Microsoft's research team. "Phishers are using malicious custom 404 pages to serve phishing ...

Now Webmasters can customize the 404 messages site visitors receive when they arrive via a broken link, as Google has bundled a new 404 page widget into Webmaster Tools. Site owners can tweak the look ...

Google advises against redirecting all 404 pages to the homepage, recommending proper redirects or maintaining 404 status codes. Don't redirect all 404 pages to your homepage Redirecting all 404s ...