WebDev - security

This article was created to gather all important information about security when we develop websites.

Take at account:

1. HTTP - do not let to embed website in iframe
   Someone may embed your website into own website covering some features that may lead to users data spill.

2. JavaScript - open link in new tab
   Opened webpage may inject some dangerous logic to opener.

3. HTML - open link in new tab
   Opened webpage may inject some dangerous logic to opener.

4. JavaScript - display security warning for non-programmers in web browser console
   Someone may ask user to press F12 and paste there some source code - it is better to warn user.