Most of them are said to be quick about exploiting Gmail or other systems they know, but slow with unknown software (hours rather than seconds). If your system

Most of them are said to be quick about exploiting Gmail or other systems they know, but slow with unknown software (hours rather than seconds). If your system is on-premises, you may reasonably assume that the attacker will need to read the man page, like a new employee, see? But these guys didn't need to read the man page.