The pro-Palestinian group hackers who call themselves KDMS Team violated the by clicking here of Metasploit, a leading security company, using a fax machine.
The hack was a simple DNS redirect, which allowed the attackers to change the files that tell browsers who the web Server of the website. As you can see, the attack was not directly on the website server but in the DNS that redirected visitors to another site.
In this case, as reported by Guardian, it is noteworthy that the redirection was carried out via a fax received by Register.com, which hosts the domain of Metasploit.
"We are in the process of assessing the situation", they report from the Rapid7, The mother Metasploit company, “but it looks like the site was hijacked via a fake DNS change request that arrived at Register.com by fax. We apologize for the inconvenience.”