iiinova — where your digital self keeps evolving

Our next talk is on Tuesday 7th July (a week later than usual) when @r3n5k1.bsky.social and @craigsblackie.bsky.social will be dropping some Dell CVEs dc4420.org/2026/07/07/

dc4420.org

DC4420

First talk

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DC4420 @dc4420.bsky.social · 16/06/2026

Weather's looking good for our picnic at Battersea Park on Saturday 20th June! Find us at the Peace Pagoda from around midday, and join the Signal group for updates on the day at signal.group#CjQKIL_uBgyu...

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DC4420 @dc4420.bsky.social · 27/05/2026

Join the Signal group for updates nearer the time signal.group#CjQKIL_uBgyu...

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DC4420 @dc4420.bsky.social · 27/05/2026

Our meetup in Battersea Park will be on 20th June, if the weather holds. We'll be near the Peace Pagoda as usual, and it's a picnic so bring food or drinks!

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DC4420 @dc4420.bsky.social · 27/05/2026

For anyone who missed yesterday's link, the code and background from the talk is all at github.com/AdamLaurie/r...

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DC4420 @dc4420.bsky.social · 26/05/2026

Tonight, Major Malfunction is in town to talk about using AI for glitching! Details and directions at dc4420.org #defcon #london

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DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 28/04/2026

It's DC4420 tonight, and @emil-lerner.bsky.social will be speaking about how HFT exchanges can be exploited. Details and directions at dc4420.org as usual!

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 25/03/2026

MacOS Red Teaming, and *effective* risk communication are what we have for you, March 31st. See dc4420.org. The Greene Man 383 Euston Road London NW1 3AU Nearest Tube: Great Portland Street. (Regents Park and Warren Street both short walks away; Euston Square and Euston a brisk 10 minutes.)

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 24/02/2026

Tonight, we've got two talks from regulars! shell-e will be talking about airport security, and Mika has a tool for CyloneDX. Details and directions at dc4420.org #defcon #london

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 17/02/2026

Same time, same place, Tuesday next week. See dc4420.org. The Greene Man 383 Euston Road London NW1 3AU Nearest Tube: Great Portland Street. (Regents Park and Warren Street both short walks away; Euston Square and Euston a brisk 10 minutes.)

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 27/01/2026

It's DC4420 tonight, and Nick Dunn has offered to do a surprise talk! Details and directions at www.dc4420.org #defcon #london

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 18/01/2026

Quick reminder, we're back Tuesday next week - January 27th: See dc4420.org. The Greene Man 383 Euston Road London NW1 3AU Nearest Tube: Great Portland Street. (Regents Park and Warren Street both short walks away; Euston Square and Euston a brisk 10 minutes.)

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 03/01/2026

We're still looking for people to present this year - this month, even - and if you have something in mind, contact talks@dc4420.org to discuss it. Please.

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DC4420 @dc4420.bsky.social · 03/01/2026

Happy New Year, everyone. We're back meeting on January 27th: See dc4420.org. The Greene Man 383 Euston Road London NW1 3AU Nearest Tube: Great Portland Street. (Regents Park and Warren Street both short walks away; Euston Square and Euston a brisk 10 minutes.)

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DC4420 @dc4420.bsky.social · 16/12/2025

This is tonight, from around 7pm!

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DC4420 @dc4420.bsky.social · 12/12/2025

We don't run talks in December, but join us at The Harp (or nearby) from 7pm on Tuesday 16th dc4420.org

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 25/11/2025

Join us tonight for The Great Recruitment Firewall, and to plan the Christmas meetup! Details and directions at dc4420.org

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 22/11/2025

There's still an opening for a second speaker on Tuesday. Email talks@dc4420.org if you want to step up.

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DC4420 @dc4420.bsky.social · 22/11/2025

Just 3 days away, November 25th: dc4420.org The Great Recruitment Firewall - Mariya Hristova The Greene Man 383 Euston Road London NW1 3AU Nearest Tube: Great Portland Street. (Regents Park and Warren Street both short walks away; Euston Square and Euston a brisk 10 minutes.)

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DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 27/10/2025

This is tomorrow! We've still got space for a second talk - drop us an email at talks@dc4420.org #defcon #london

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DC4420 @dc4420.bsky.social · 23/10/2025

Just 5 days away, October 28th: dc4420.org * Lodestar Forge - Jamie Pegg The Greene Man 383 Euston Road London NW1 3AU Nearest Tube: Great Portland Street. (Regents Park and Warren Street both short walks away; Euston Square and Euston a brisk 10 minutes.)

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 29/09/2025

Tomorrow evening, we have talks on Copilot and chemical plants. Join us from 6:30pm at the Greene Man dc4420.org #defcon #london

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 26/08/2025

Tonight at the Greene Man, we've got @dekushrub.bsky.social on the dark web and Skyper on @phrack.org. Join us from around 7pm onwards dc4420.org

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 24/08/2025

As well as @dekushrub.bsky.social returning to talk about the dark web on Tuesday, Skyper is visiting for @phrack.org's 40th anniversary. More at dc4420.org #defcon #london

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 28/07/2025

Tomorrow (almost today) July 29th: dc4420.org * My hacking adventures as a software dev - Daniel Raines The Greene Man 383 Euston Road London NW1 3AU Nearest Tube: Great Portland Street. (Regents Park and Warren Street both short walks away; Euston Square and Euston a brisk 10 minutes.)

dc4420.org

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DC4420 - DEF CON London

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Atmosphere Community @atmosphere.community · 28/07/2025

The @germnetwork.com team has been participating in the #e2eemessagingWG to figure out a way to have secure private group messaging that is compatible with ATProto. They've shipped a proof of concept of using your account to do this! You'll need to get on the waitlist as they slowly add people.

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DC4420 @dc4420.bsky.social · 10/07/2025

July's event is now posted. Presentation 1: Daniel Raines: My hacking adventures as a software dev Presentation 2: TBC 19:00 for 19:30, downstairs bar, The Greene Man, 383 Euston Road Closest stations: Great Portland Street, Warren Street, Regents Park, Euston. dc4420.org

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 23/06/2025

We've got two talks! Jessica Wilson x.com/sweetserenit... will talk about automating forensics, and @n1ckdunn.bsky.social is back to show how new OWASP Top 10s could have stopped HAL 9000. Details and directions at dc4420.org

dc4420.org

DC4420

DC4420 - DEF CON London

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DC4420 @dc4420.bsky.social · 23/06/2025

We're still looking for talks for tomorrow! Drop an email to talks@dc4420.org if you have a talk or suggestion

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DC4420 @dc4420.bsky.social · 17/06/2025

Next week. Are you coming...?

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Nick Dunn @n1ckdunn.bsky.social · 31/05/2025

For anyone who was at DC4420 (@dc4420.bsky.social) on Tuesday, thanks for all the appreciation for my talk. Slides are available here: github.com/N1ckDunn/SOS...

github.com

GitHub - N1ckDunn/SOSLInjection

Contribute to N1ckDunn/SOSLInjection development by creating an account on GitHub.

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DC4420 @dc4420.bsky.social · 28/05/2025

There is wisdom in knowing when to step back.

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DC4420 @dc4420.bsky.social · 27/05/2025

Nearest Tube: Great Portland Street. (Regents Park and Warren Street both short walks away.)

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DC4420 @dc4420.bsky.social · 27/05/2025

Short notice, but... next meetup tomorrow, 19:00 for 19:30 start. dc4420.org * Is Your Phone Spying on You? An In-Depth Analysis of Vulnerabilities in Cisco VoIP Phones * Slightly SOSL’ed: Locating And Testing SOSL Injection The Greene Man 383 Euston Road London NW1 3AU

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DC4420 - DEF CON London

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Raj 🇬🇧🇪🇺🇮🇳💻🖥 (🌻🇺🇦;🇵🇸) @realcainmosni.bsky.social · 26/05/2025

ssh menu@tty.sdf.org Have fun. I am reminded of TOPS20 on Kingston Poly's (then new) DEC 2060, in around 1980 (because that was the year I had my first slow melt-down over study stress for my A-levels, and took refuge in the Poly's computer lab on my school account).

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Darryl Hughes @slipdexic.bsky.social · 21/04/2025

DC4420 is back 29 April from 19:00 Talks : 30+ Years of Infosec Failures OWASP Nettacker dc4420.org NEW Location The Greene Man 383 Euston Road London NW1 3AU Closest stations: Great Portland Street, Warren Street, Euston. #dc4420 #owasp #defcon #infosec @dc4420.bsky.social

dc4420.org

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DC4420 - DEF CON London

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Darryl Hughes @slipdexic.bsky.social · 21/03/2025

@dc4420.bsky.social The resuscitation edition of DC4420 will be on Tuesday 29th April 2025 commencing from 19:00. New venue is: Greene Man (Euston),383 Euston Road,London,NW1 3AU (maps.app.goo.gl/mPahakU6ZFmQ...) Nearest Tube: Great Portland Street, Warren Street. · Share · Like · Enjoy

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