Four days ago the news about the Heartbleed got every sysadmin's attention. Renowned security expert Bruce Schneier writes:

Heartbleed Openssl Security Ssl Stunnel Transloadit Ubuntu

I recently had an annoying encounter with the error message: Too many authentication failures for root. I found out this can be caused because you've hoarded too many SSH keys :)

Linux Security Ssh

If you want to do command-line MySQL administration like restoring databases or dumping statistics, you need the root account and it's password. Or do you?

Database Mysql Password Security

Let's say you want your local restricted users to be able to restart specific services. On linux you'd probably type visudo. In Windows I found, you have to dig a little deeper into the system and really do your research....

Sddl Security Sid Windows

Sometimes when digging real deep into Windows like I recently had to, you need to have the Windows SID (Security Identifier) of a local user. I wasn't able to find any standard way of obtaining this info, so I wrote...

Security Sid Vbscript Windows