John Kristoff

@jtk@infosec.exchange
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UIC PhD candidate | https://Dataplane.org | Netscout. Internet infrastructure (#BGP, #DNS) and #infosec. Bit mechanic. Also: #Blues / tfr / #fedi22
Homepagehttps://dataplane.org/jtk

Picture of a credit card skimmer and website where you could purportedly get them ~2007. I couldn't find an archive of the site. I'm not sure if the site really sold them or not, but I remember seeing a few different pics advertising for it back then. This is just one of them I had lying around in a personal archive.

#ThrowbackThursday #infosec

#ThrowbackThursday Here is a ~20 year old plot showing the frequency distribution of client source port usage at an edu #DNS resolver. Notice how the most common ports started at around 1024? That was Microsoft Windows. This picture should look a lot different if I were to redraw this today.
How has this not been repeatedly showing up in my timeline?
First time logging into #Twitter in months to deactivate account. I had stopped following everyone and removed almost all tweets about 2 years ago. Attached is what my timeline started with. Good riddance.
#StackOverflow just now.
The #Firefox bigfoot truck spotted in #Chicago.
Sorry not sorry to all attendees who are fans of the #DNS haiku.

Whelp, I finally reached the limits of "throw resources at it" for this system.

A minor bump on the way from IPv4 to IPv6 transition. Attached image shows where things were just before a Jupyter kernel had to restart when memory was exhausted trying to plotting a large amount of #IPv6-related data. :-)

Everyone seems afraid to open the lokicollective email and click the link, or hasn't admitted they did. Here is why I "think" it is a research project, but will remain skeptical since they seem to not only fail to identify themselves, they have made sure recipients were mislead and kept in the dark.
The developer responsible for this better not have been one of my networking students.