سلام
این نفوذ یکی دو سرور نیست ظاهرا طیف گسترده ای از سرورها به همین شکل هک شدند یکی از سرورهای ما هم که نسخه6.7 بود نفوذ داشته
دیتاسنتر هم هتزنر بوده
خود هتزنر هم در جریات این مورد هست
Thank you for your request. Unfortunately, given that this is an unmanaged root server, we cannot be much of help here.
But as per feedback of some other affected customers, a reboot of the host made the attackers message disappear. You may try this and afterwards inspect your system for any unauthorized access.