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Abstract:

There's no doubt that undertaking the practice of threat modeling can significantly improve an organisation's security posture, but it can be difficult to understand how and where to start. Even with an extensive level of system knowledge, it can often be difficult to truly shift focus from your day-to-day role and take on the attacker's mindset.

In this presentation, we explore the practical application of Large Language Models for threat modeling. We'll examine the benefits and challenges of threat modeling, including an overview of the process itself. A key focus will be on creating meaningful prompt sheets that enable effective LLM-based threat modeling while maintaining the confidentiality of sensitive company information.

The talk includes live demonstrations of threat modelling using ChatGPT and Gemini, with a comparative analysis of both platforms' capabilities and approaches. Time permitting, we'll conclude with questions and follow-up discussion on the topics covered.

Location:

• 📍 Venue: Veracode, 36 Queen Street London, EC4R 1BN
• 📅 Date: Wednesday, 19th November 2025
• 🕕 Time: 6:00 PM – 8:00 PM
• 🎟️ RSVP now and join us on the 19th November!

Sponsors:

• We are incredibly grateful to Veracode and Orca Security for their support and commitment to the DevSecOps London Gathering community!

Join the community:

• Can't make it to the event? Keep up to date with our activities on LinkedIn, X (Twitter), Bluesky & Youtube.
• Tune in to our insightful podcast, DSO Overflow.

Welcome to the DevSecOps London Gathering July Event on Wednesday 23rd July! 📍 Hosted at Veracode, 36 Queen Street, London 📅 Wednesday, 23rd July 🕕 6:00–8:00 PM

This month, we’re diving into a real-world DevSecOps success story - one that saved $20K annually and made open-source work harder and more securely in production.

🎤 Talk Title: How We Saved $20K Annually by Hosting Our Own Map Server on AWS Using TileServer Speaker: Vimal Paliwal (AWS Community Builder & Cloud Architect)

Talk Synopsis: When map service costs began increasing and compliance requirements demanded expensive licensing upgrades, Vim and his team made the move to a self-hosted TileServer solution on AWS, cutting costs by around 97% annually.

In this talk, Vim will take us through:

• Why and how the switch to TileServer happened
• The serverless AWS architecture behind the scenes
• Challenges with generating and managing map data
• The security controls layered in, including WAF, CloudFront Functions, Lambda Authorizer, and VPC Link
• Lessons learned and best practices for anyone scaling open-source solutions in the cloud

Whether you’re working on cloud cost optimisation, building secure infra, or scaling open-source in production, this is one to catch.

As always, there’ll be drinks, snacks, and networking with the community!

🎟️ RSVP now and join us on July 23rd!

Join the community: Can't make it to the event? Keep up to date with our activities on LinkedIn & Twitter