If you are not sure if the website you want to visit is safe, you can check it out here. Enter the address (url) of the website and see the invisible elements, such as a header or meta data.
site address:daotao.vnua.edu.vn/App_Themes/Standard/Images/icon_04b.gi...
favicon.ico:
URL does not point to a web page (html/xhtml) or read error or page not found. (5002)

Header

HTTP/1.1 200 OK
Content-Type image/gif
Last-Modified Sat, 20 May 2017 03:31:58 GMT
Accept-Ranges bytes
ETag 0cba0a219d1d21:0
Server Microsoft-IIS/10.0
X-Powered-By ASP.NET
Access-Control-Allow-Origin htt???/daotao.vnua.edu.vn
Date Fri, 07 May 2021 02:12:56 GMT
Content-Length 138

Load Info

page size138
load time (s)0.389352
redirect count0
speed download354
server IP220.231.107.130


* all occurrences of the string "http://" have been changed to "htt???/"