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Joined 1 year ago
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Cake day: July 5th, 2023

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  • I’m one of the admins who manage CrowdStrike at my company.

    We have all automatic updates disabled, because when they were enabled (according to the CrowdStrike best practices guide they gave us), they pushed out a version with a bug that overwhelmed our domain servers. Now we test everything through multiple environments before things make it to production, with at least two weeks of testing before we move a version to the next environment.

    This was a channel file update, and per our TAM and account managers in our meeting after this happened, there’s no way to stop that file from being pushed, or to delay it. Supposedly they’ll be adding that functionality in now.


  • Yes, CrowdStrike says they don’t need to do conventional AV definitions updates, but the channel file updates sure seem similar to me.

    The file they pushed out consisted of all zeroes, which somehow corrupted their agent and caused the BSOD. I wasn’t on the meeting where they explained how this happened to my company; I was one of the people woken up to deal with the initial issue, and they explained this later to the rest of my team and our leadership while I was catching up on missed sleep.

    I would have expected their agent to ignore invalid updates, which would have prevented this whole thing, but this isn’t the first time I’ve seen examples of bad QA and/or their engineering making assumptions about how things will work. For the amount of money they charge, their product is frustratingly incomplete. And asking them to fix things results in them asking you to submit your request to their Ideas Portal, so the entire world can vote on whether it’s a good idea, and if enough people vote for it they will “consider” doing it. My company spends a fortune on their tool every year, and we haven’t been able to even get them to allow non-case-sensitive searching, or searching for a list of hosts instead of individuals.


  • Speaking as someone who manages CrowdStrike in my company, we do stagger updates and turn off all the automatic things we can.

    This channel file update wasn’t something we can turn off or control. It’s handled by CrowdStrike themselves, and we confirmed that in discussions with our TAM and account manager at CrowdStrike while we were working on remediation.



  • I’m a security engineer, and encryption is great, but can be bypassed. Relying on encryption assumes it was implemented properly, that the system was shut down properly so all keys were flushed correctly, and the encryption algorithm doesn’t have weaknesses.

    Generally if somebody dedicated enough can acquire physical access to a system, they can probably find a way into it given the right resources. Did that happen here? Probably not. Could it have? Absolutely. That’s why most enterprises or government hard drives are shredded rather than just relying on them being wiped or encrypted.

    Encryption is part of the solution, but it’s not automatically the complete solution.



  • I run those calls through my own phone system, which I host on a system in my basement. There are a couple main options out there, I used FreePBX for a while but now I’m using 3CX. They don’t require a ton of computing power-- mine runs on a virtual server inside a larger system, but you could run one off of an inexpensive thin client from eBay if you wanted to.

    I get my phone number from VoIP.ms, which is pretty inexpensive and has worked well for me for years.

    For a phone, you can either use a soft phone (an app on your computer or smartphone), or use an older IP phone off eBay (which is what I do since I also have a Plantronics wireless headset that connects to it).

    It’s pretty easy to get started, but you do need to make sure you’re configuring everything correctly since selfhosted services can open up security holes in your network if you don’t know what you’re doing.