• Time Sync on Virtual DCs

    I was recently caught in a tricky problem: The clock of one of my host servers ran out of sync.. – significantly. The core problem was that my Mediacenter (which is domain integrated) started to record about 6-8 minutes too late but this is not the reason...
  • Patch Management – Cover the whole 9 yards

    I pretty often have discussions about Patch Management with our customers. I think it is a very important discussion as I see too many customers not patching at all. However, taking the shining examples – they often look at the Microsoft product suite...
  • Deploying PKI

    Recently I decided to spend some time to implement some new technologies in my environment at home. The environment itself is a mixture between test and production. If you are reading this post on www.halbheer.info/security , you are already accessing...
  • Would a properly managed IT have withstood Conficker?

    Before I start here: Let’s be clear that I will not say (and will never say) that if a customer was infected with Conficker he had a poorly managed network! I had a lot of discussions over the course of time about the reasons for customers being infected...
  • Qtel’s Guide to a Faster Internet Experience

    I like that: As you probably know, I did a tour through the Gulf when we launched the Security Intelligence Report last year. One of the reasons was that we know that the Gulf has a pretty high malware infection rate. You can read this in the corresponding...