Well if there’s a known vulnerability, they get hacked. Millions of Exim Mail Servers Are Currently Being Attacked.
Millions of mail servers running vulnerable Exim mail transfer agent (MTA) versions are currently under siege, with attackers gaining permanent root access via SSH to the exploited machines according to security researchers.
The patch was issued in February. It was raised to critical a week or so ago. People are clueless.
The only people who will find this to be “unexpected” will be “executives.”
People are all about Windows, or Mac, Android vs iOS, but the most prevalent OS running the internet is Unix, in one of its many incarnations. And Exim, is one of the most popular email server packages running on Unix.
My initial post on this vulnerability is from the 9th of June.