Good: IT admins scrambled to patch 80 per cent of public-facing Citrix boxes to close nightmare hijack hole

Bad: The other 20 per cent are still wide open. Also bad: Some of those patched machines may have been hacked

Roughly a fifth of the public-facing Citrix devices vulnerable to the CVE-2019-19781 remote-hijacking flaw, aka Shitrix, remain unpatched and open to remote attack."