💡 "The challenge of computing is to turn ideas into simple and elegant solutions." – Frances E. Allen At LESIS, we share this principle. Our mission is to transform complexity into clarity, creating solutions that are both innovative and efficient.

A sentinel never sleeps. Overlooking a single weak point — an outdated dependency, an unmaintained repo, or a silent alert — can put your whole system at risk. 🔗 Explore (and contribute) on GitHub: github.com/lesis-lat/sent…

💳 Money for nothing, discounts for free. A simple logic error, a business flaw — and the balance grows like magic. ⠀ 🔍 Business logic flaws don’t always leave traces in code — but they can cause real financial damage. ⠀ 📖 Read the full post at blog.lesis.lat/2025/10/04/roc…

Like a fortress gate in your CI/CD, Security Gate blocks insecure code before it hits production. Built for GitHub Actions. Integrates with Dependabot, Code & Secret Scanning. Policy-based auto-blocking. Open source. Extensible. Secure by design. 🔗 github.com/lesis-lat/secu…

LESIS goes beyond borders. We’ve carried out projects in Brazil, Spain, Mexico, Portugal, and Argentina — bringing together research, innovation, and security in every delivery. 🌐 Interested in collaborating or learning more? Visit lesis.lat

In 2025, LESIS supported 4 cybersecurity events across Brazil🇧🇷 — 1,316 participants. 73.5% aged 18–35 👩‍💻 91.1% hold a degree 🎓 20% women | 2% PwD ♿ We still face diversity & inclusion challenges. Let’s build a stronger, more inclusive cybersecurity community! #InfoSec #LESIS

A ship in port is safe, but that’s not what it’s built for. Neither are we. At LESIS, we’re built to explore new technological horizons.

In 2025, LESIS joined events shaping Brazil's cybersecurity ecosystem, fostering learning, research, & collaboration. Every conversation & connection reinforced the power of community in security. We show up to learn, exchange, & grow—together.

Education is the foundation of every meaningful transformation. Ideas change the world when knowledge, access, and purpose come together.

The future of tech is built by those who teach today. Proud to support Mente Binária (ONG), connecting knowledge seekers with organizations that need tech talent. Long-term impact starts with education.

Technology alone doesn’t shape the future. People, knowledge and education do. Supporting cybersecurity education means building a stronger ecosystem.

Strengthening Brazil’s cybersecurity community Education is the foundation of a resilient cybersecurity ecosystem. In 2026, LESIS supports Mente Binária in training new cybersecurity professionals. Read the full article on our blog.

What does digital banking look like from a security perspective? In this talk, LESIS shares real-world case studies on vulnerabilities in Brazilian financial applications, grounded in ethical security research. 🎥 youtu.be/-2xIAGx5wfY #LESIS #AppSec #SecurityResearch

This week, LESIS participated in Connect, an event hosted by OpsTeam. It was an opportunity to present our research on the Economic Taxonomy of Vulnerabilities, offering a strategic perspective on prioritization, impact assessment, and cybersecurity decision-making.

Innovation in security does not happen in isolation. LESIS is proud to be a Gold Supporter of Mente Binária (ONG) — supporting technical communities that push research, collaboration, and knowledge forward. We believe strong ecosystems build stronger security.

Offensive technology is not about attack. It is about understanding systems deeply enough to anticipate failure before it happens. At LESIS, we build with intent, precision, and research at the core. 🌐lesis.lat

Kasumi (霞) — mist. What’s there, but not immediately visible. During authorized security assessments, Kasumi extracts and structures Slack communications for deeper analysis. Open source by LESIS. Explore (and contribute) on GitHub: github.com/lesis-lat/kasu…

How does Kasumi work in practice? In this video, we present a short overview of Kasumi, our tool for extracting and analyzing Slack messages during authorized security assessments. 🔗youtube.com/watch?v=ppFvnx…