Проверка на сигурността на сайтовете
SiteAdvisor
SiteAdvisor is an extension to alert you to existing threats such as spyware, malware or viruses on web pages. SiteAdvisor contains a system of automated robots to test each website, download and email registration form on the web.
https://mcafee-siteadvisor.en.softonic.com/
WhoIs.net
The app can help to get an idea of the history of a domain and additional information, to perform a search to find out who has a domain name, how many pages of a site are listed on Google or even a search on WhoIs addresses for website owner.
Virustotal.com
Check received attachments before using them
https://www.virustotal.com/gui/
Image Verification Assistant
An application for checking graphic images in the web space, helping to analyze their authenticity.