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Jasper

@packetjay.bsky.social
606 followers 301 following 14 posts

Head of CSIRT at G Data Advanced Analytics. Creator of TraceWrangler. Member of the Board of Directors of the #Wireshark Foundation. My thoughts are my own.

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Reposted by Jasper
Wireshark Foundation @wiresharkfoundation.org · 11/03/2026
Love Wireshark? Sponsor SharkFest, the official Wireshark user and developer conference! SharkFest is heading to Nashvillle, July 18-23, and we’re looking for sponsors to join the fun! Multiple sponsorship levels to choose from or customize your own! Explore and contact sharkfest@wireshark.org.
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Jasper @packetjay.bsky.social · 02/03/2026
I submitted a talk to the 38th annual @first.org conference about how to speed up digital forensics in Ransomware cases significantly, allowing victim companies to revover as fast as possible while still finding out what happened. It got rejected, unfortunately 🤷. Maybe next time 😏
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Wireshark Foundation @wiresharkfoundation.org · 11/07/2025
Just getting started with Wireshark? Check out “Packet Capture 101” from @packetjay.bsky.social, this covers everything you need to know get up and running with Wireshark. www.youtube.com/watch?v=rWHW... Want to learn live from experts? Join us at SharkFest'25 EUROPE! sharkfest.wireshark.org
youtube.com
26: Packet Capture 101 | Learn Wireshark @ SF22US
YouTube video by SharkFest Wireshark Developer and User Conference
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Reposted by Jasper
Wireshark Foundation @wiresharkfoundation.org · 03/07/2025
Dive deep into #TCP with @packetjay.bsky.social @ SharkFest'25 Europe! Join the TCP Masterclass & learn to dissect, diagnose + master complex TCP behaviors from one of the best in the field. Whether you're chasing lost packets or tuning performance, this is for you. sharkfest.wireshark.org/sfeu
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Jasper @packetjay.bsky.social · 02/06/2025
The new Wireshark certification is finally here! A lot of work went into this, making sure it's a certification that proves skills as a network analyst and not just knowledge of the UI.
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Wireshark Foundation @wiresharkfoundation.org · 15/05/2025
Level up your TCP troubleshooting skills @ #SharkFest'25 US & EUROPE! Join renowned expert @packetjay.bsky.social for Pre-Conference Class II: TCP Analysis Masterclass — deep dive into TCP behavior, performance bottlenecks & multi-point capture. sharkfest.wireshark.org #Wireshark
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Wireshark Foundation @wiresharkfoundation.org · 18/04/2025
Master TCP Analysis with @packetjay.bsky.social @ SharkFest! Join Jasper for a TCP Analysis class during SharkFest'25 US & Europe. Elevate your understanding of TCP connections in complex, multi-tiered environments. This class offers invaluable insights beyond the basics.​ sharkfest.wireshark.org
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Wireshark Foundation @wiresharkfoundation.org · 24/03/2025
​Join us at #sf25us for @packetjay.bsky.social's #TCP Analysis Masterclass on 6/16! Delve into TCP, from basic concepts to complex scenarios involving multi-point captures for packet loss & timing issues. Elevate your network analysis skills + tackle challenging cases. sharkfest.wireshark.org/sfus
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Wireshark Foundation @wiresharkfoundation.org · 20/02/2025
Time is running out—there’s just over 1 week left to take advantage of early bird pricing for SharkFest’25 US. Register by 3/1 to save & secure your spot at the premier #Wireshark & network analysis conference. Don’t miss this chance to learn from the best—sign up today sharkfest.wireshark.org/sfus
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Wireshark Foundation @wiresharkfoundation.org · 03/02/2025
Sharpen Your TCP Troubleshooting Skills at #sf25us! Join @packetjay.bsky.social for the TCP Analysis Masterclass - dive deep into advanced TCP analysis, from detecting packet loss to multi-point capture troubleshooting. Master the complexities of TCP! sharkfest.wireshark.org/sfus
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Gerald Combs @geraldcombs.bsky.social · 27/01/2025
Periodic reminder that if you look at packets for a living (or would like to), SharkFest is the place for you! The Next SharkFest US will be in Richmond, VA in June. The next SharkFest EU will be in the fall and we'll announce its location and dates soon. sharkfest.wireshark.org
sharkfest.wireshark.org
SharkFest, launched in 2008, is a series of annual educational conferences staged in various parts of the globe and focused on sharing knowledge, experience and best practices among the Wireshark developer and user communities.
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Jasper @packetjay.bsky.social · 12/01/2025
Just released a new version of Tracewrangler at www.tracewrangler.com. Some minor bug fixes, and it can now read & write Linux Cooked Capture v2 headers, so those kind of #pcap files can now be sanitized as well. Not a big thing, but I'm slowly getting into coding again it seems...
A Screenshot of the Tracewrangler application window showing a pcap file loaded with it's meta information in the lower right pane. A "Anonymize Files" task is assigned and pending to run.
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Wireshark Foundation @wiresharkfoundation.org · 28/10/2024
SharkFest'24 EUROPE is coming up next week! Join us for the ultimate Wireshark conference where experts & enthusiasts come together to dive deep into the world of packet analysis. Find out more & sign up: sharkfest.wireshark.org/sfeu
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Wireshark Foundation @wiresharkfoundation.org · 09/09/2024
Here's a great video for #Wireshark users of all levels talking about Network Troubleshooting from Scratch, taught by @packetjay.bsky.social. youtu.be/4hMT0kcW39g For more classes like this in-person in Vienna, join us 4-8 Nov for #sf24eu! sharkfest.wireshark.org/sfeu #NetworkTroubleshooting
youtu.be
01 - Network Troubleshooting from Scratch | Learn Wireshark @ SF22US
YouTube video by SharkFest Wireshark Developer and User Conference
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Wireshark Foundation @wiresharkfoundation.org · 01/05/2024
A new video from the SharkFest archives is out! youtu.be/rWHWOat5_Xg Learn the basics of Wireshark & packet capture with packet expert @packetjay.bsky.social in his "Packet Capture 101" class from SharkFest'22 US. For more live classes, sign up for #sf24us US! sharkfest.wireshark.org/sfus
youtu.be
26: Packet Capture 101 | Learn Wireshark @ SF22US
The title of this class is: "Packet Capture 101" and was taught by Jasper Bongertz. This was recorded on July 14th in Kansas City, MO. Subscribe to our channel for tons of free Wireshark educational content. To attend a live SharkFest and to learn Wireshark with packet analysis experts, visit: https://sharkfest.wireshark.org. SharkFest™, launched in 2008, is a series of annual educational conferences staged in various parts of the globe and focused on sharing knowledge, experience and best practices among the Wireshark® developer and user communities. SharkFest attendees hone their skills in the art of packet analysis by attending lecture and lab-based sessions delivered by the most seasoned experts in the industry. Wireshark core code contributors also gather during the conference days to enrich and evolve the tool to maintain its relevance in ensuring the productivity of modern networks. The Wireshark Foundation is a non-profit organization helping as many people as possible understand their networks as much as possible. As time goes on, more and more of our daily life happens using software, and that software relies on network connectivity. By hosting educational conferences, the Wireshark Foundation provides industry professionals and students with the knowledge and understanding required to ensure that the networks and systems we depend on are reliable, secure, and fast. https://twitter.com/wiresharkfest https://wiresharkfoundation.org Learn Wireshark Wireshark Basics Beginner Wireshark Course Session on how to use Wireshark
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Wireshark Foundation @wiresharkfoundation.org · 25/03/2024
This is the last week to take advantage of early bird pricing for SharkFest'24 US, the best place to learn Wireshark and network analysis! Sign up today and save: sharkfest.wireshark.org/sfus #Wireshark #NetworkAnalysis #sf24us
SharkFest'24 US, Wireshark Developer & User conference, early bird registration ending soon.
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Wireshark Foundation @wiresharkfoundation.org · 01/03/2024
Join Chris Greer & Ross Bagurdes at SharkFest'24 US June 15-20 in Fairfax, VA for a class you won't want to miss! youtu.be/ebnavTS__YA Core #Wireshark Skills for Network Engineers and Security Pros sharkfest.wireshark.org/sfus
youtu.be
SharkFest'24 US Core Wireshark Skills Class Trailer with Chris Greer & Ross Bagurdes
Join @ChrisGreer & Ross Bagurdes at SharkFest'24 US June 15-20 in Fairfax, VA for a class you won't want to miss! COURSE TITLE:Core Wireshark Skills for Ne...
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Wireshark Foundation @wiresharkfoundation.org · 19/02/2024
Unlock the mysteries of network analysis at SharkFest'24 US, where everyone from industry leaders to new #Wireshark users meet & share knowledge. Dive deep into cutting-edge classes, ensuring your network expertise surges ahead - sign up now to ride the wave! sharkfest.wireshark.org/sfus #sf24us
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Jasper @packetjay.bsky.social · 01/11/2023
The Sharkfest 2023 EU keynote just started with Gerald Combs up on stage in Brussels #sf23eu #wireshark
Gerald up on stage in front of a slide with a comic where someone accidentally deleted a lot of data
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Jasper @packetjay.bsky.social · 13/10/2023
My team had an encounter in a recent #DFIR situation where we saw a #CobaltStrike feature in use by the perpetrators we hadn't seen before: "sleep mask", which obfuscates memory content while the beacon is inactive, making #Yara signatures come up empty. Blog post here: cyber.wtf/2023/10/13/c...
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Roland K. @knall.cloud · 09/10/2023
Episode 11 of the SharkBytes Podcast is out now! Today we're chatting with Radia Perlman, the inventor of the spanning-tree protocol and has influenced how networks are organized and move data. Audio: sharkbytes.transistor.fm Video: youtu.be/UXGqOjWmtUg
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