We don't run talks in December, but join us at The Harp (or nearby) from 7pm on Tuesday 16th for some Christmas cheer

Join us tonight for The Great Recruitment Firewall, and to plan the Christmas meetup! Details and directions at

For December we'll meet up somewhere for drinks, followed by some food, usually in Chinatown. We'll work out the plan tomorrow.

We've got one talk so far for the last DC4420 of the year https://t.co/NN8IQh3uvo. Still space for one more if you have something to talk about #defcon #london

@DC4420 Was great to step in and help out, hope people enjoyed the talk.

Tomorrow evening, we've got Jamie talking about his new tool for managing red team infrastructure. There's still space for a second talk - drop us an email at talks@dc4420.org #defcon #london

Tomorrow evening, we have talks on Copilot and chemical plants. Join us from 6:30pm at the Greene Man https://t.co/NN8IQh3uvo #defcon #london

It was great to do my first in person talk at @DC4420 Lots of engaging questions and positive feedback :) Find out more about my investigations at

@DC4420 @Deku_shrub @phrack …and he will bring a box of PHRACK magazines ❤️

Tonight at the Greene Man, we've got @Deku_shrub on the dark web and Skyper on @phrack. Join us from around 7pm onwards

STAFF will attend https://t.co/NasxWe2gJJ meeting in London TODAY (+distribute #72 hardcopies, drink & laugh). Read more about DefCon MeetUps: https://t.co/9y79YSmWH9 Go to a meeting in your local area. If there is none, then be that person who creates one. #KeepHacking

As well as @Deku_shrub returning to talk about the dark web on Tuesday, Skyper is visiting for @phrack's 40th anniversary. More at https://t.co/5XzXdbnj65 #defcon #london

I shall be speaking at @DC4420 this Tuesday about my dark web murder for hire investigations!

It's DC4420 tonight, and we've got Daniel Raines talking about his experience with physical access control systems. Details and directions at https://t.co/NN8IQh2WFQ #defcon #london

And like magic, we've got two talks! Jessica Wilson @sweetserenity28 will talk about automating forensics, and Nick Dunn https://t.co/14XyQwrk9b is back to show how new OWASP Top 10s would have stopped HAL 9000. Details and directions at

We're back at the Greene Man tomorrow (Tuesday 24th June). But we don't have any talks yet, does anyone have a last-minute one they want to give? #defcon #london

Hope to see some of my friends at #InfosecurityEurope tomorrow. 😊 Also I have a @defcon care package for the @DC4420 @defcongroups 🥰 #HackerAdventures

We've got two talks tomorrow evening at the Greene Man! @xoreipeip is talking about Cisco phones, and Nick Dunn https://t.co/14XyQwrk9b will explain SOSL injection #defcon #london

If you're in London tomorrow (Tuesday 29th April 2025) why would you not be here: https://t.co/y8uNmppDeB Our first regular meeting at a NEW VENUE! Meeting starts around 18:30 - first talk at 19:30. See you there!

We're back! Join us on Tuesday 29th for two talks at the Greene Man near Euston https://t.co/NN8IQh2WFQ #defcon #london