OpenSSHは弱い？

下記の記事が出ている。

　OpenSSH password guessing attacks may be 10,000 times easier than you thought
　Naked Security: July 23, 2015
　https://nakedsecurity.sophos.com/2015/07/23/openssh-password-guessing-attacks-may-be-10000-times-easier-than-you-thought/