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Rob VandenBrink Profile
Rob VandenBrink

@rvandenbrink

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Security focused, networking and virtualization guy, add in Windows, Linux, mainfames and scripting, Internet Storm Center. Brains for rent / sarcasm for free!

Canada
Joined January 2009
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@rvandenbrink
Rob VandenBrink
15 days
Today at the Internet Storm Center: Keeping an Eye on MFA Attacks. So you've moved your company to MS MFA, but where do you track failed logins and authentication attacks now?.
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isc.sans.edu
Keeping an Eye on MFA-Bombing Attacks, Author: Rob VandenBrink
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@rvandenbrink
Rob VandenBrink
3 months
Just a reminder - if you did a pentest 11 months ago, the cert and email vendors will start to “pentest” you about now, spamming you for renewals of stuff don’t want, that you only needed for 2 weeks a year or so ago …. Turnabout is fair play I guess 🙂.
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Grok
6 days
Join millions who have switched to Grok.
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@rvandenbrink
Rob VandenBrink
3 months
The latest find, also the only addition to the calculator collection that is not RPN or a slide rule!. Works just like I remember it from 1981 !
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@rvandenbrink
Rob VandenBrink
4 months
This month's Humble Bundle includes 20 excellent books. Need to code network stuff in C,Go or Python? Need more depth in AWS, Azure or GCP? Or (shameless plug), do you need a cookbook for network services in Linux?. Offer expires May 5, get your order in!.
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humblebundle.com
Your network is your networth—become a networking master with our latest tech bundle by Packt. Pay what you want & support charity!
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@rvandenbrink
Rob VandenBrink
5 months
We got our votes in!
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@rvandenbrink
Rob VandenBrink
5 months
Just added a bogus ip route statement to the host (with permission) to demonstrate .AS400 commands take me waaaaay back to coop days at IBM and S/36 and S/38 (circa 1980’s).
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@rvandenbrink
Rob VandenBrink
5 months
Ah, nothing like getting RCE during a pentest, a lot rarer than it used to be. Not only that, but using the web app to pivot,getting RCE on the inside iSeries (yes, AS400) host. I can execute any CL command the service account has rights to, which is admin-equiv apparently.
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@rvandenbrink
Rob VandenBrink
6 months
Never owning up to the fact that nobody really needs them to be perfect, but some common sense would go a long long way though.
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@rvandenbrink
Rob VandenBrink
8 months
When I’m in a call queue and hear that they’ll collect my privacy info “in accordance with our policy”, what I hear is “in accordance with the prophecy”. Every time. Is this just a me thing?.
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@rvandenbrink
Rob VandenBrink
8 months
And yes, you can put a band-aid on your hypervisor of choice to fix that, but who wants to be putting band-aids on every tool they use just to get them to work, and then worry about the one thing that got missed . .
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@rvandenbrink
Rob VandenBrink
8 months
Every minute I spend fighting to “steer” cpu-hungry processes to faster cores is time lost forever.And yes, there are lots of single thread cli and jre apps that need “help” there (grep, sed, awk and so on for starters).
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@rvandenbrink
Rob VandenBrink
8 months
ug, why can’t I buy a new “maxed out” laptop without e-cores. 8 real cores, 4k res, 2 tbolt, 4 nvme., 64-128g. This was a thing a few years ago, doesn’t seem to be possible these days?.
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@rvandenbrink
Rob VandenBrink
10 months
If you’ve always meant to go to Schmoocon, this is your last chance - at 50 years old (plus one) the Potter’s have decided they’ve been at this long enough (thanks from all of us btw). 1st round tickets go on sale at noon EDT (in 27 minutes).
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@rvandenbrink
Rob VandenBrink
1 year
Dare I say "living off the land"?. On the road to #SANSFIRE2024
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@rvandenbrink
Rob VandenBrink
1 year
Is this the same as deny any/any ?. On the road to #SANSFIRE2024
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@rvandenbrink
Rob VandenBrink
1 year
So if your mailbox is a phish, is all received mail automatically phishing?. On the road to #SANSFIRE2024
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@rvandenbrink
Rob VandenBrink
1 year
Josh and I went kayaking for Father's day, great day (aside from Josh getting wetter than he had planned on)
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@rvandenbrink
Rob VandenBrink
1 year
Today at the Internet Storm Center: Scanning with NMAP without Scanning (Part 2) - this time w/the ipinfo API - ie where is that IP?.If you have to diag "impossible geo" logins from log entries, this script may save you some time!.
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isc.sans.edu
NMAP Scanning without Scanning (Part 2) - The ipinfo API, Author: Rob VandenBrink
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@rvandenbrink
Rob VandenBrink
1 year
Today at the ISC: Need a really quick NMAP scan, but don’t have minutes and minutes to run one? Need info on services that the client disabled right before the pentest so you wouldn’t see them? NMAP’s script to use the Shodan API is one you should look at!.
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isc.sans.edu
Scanning without Scanning with NMAP (APIs FTW), Author: Rob VandenBrink
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@rvandenbrink
Rob VandenBrink
1 year
Today at the Internet Storm Center: Got MFA? If not, Now is the Time!.The story of a brute force / cred stuffing attack against a (real) VPN, with some lessons learned.
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isc.sans.edu
Got MFA? If not, Now is the Time!, Author: Rob VandenBrink
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