BSides London 2021 BSides London 2021
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CrowdSec, a crowd-based approach to infrastructure defense

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Track 2

Klaus has been in infosec for many years as a practitioner but recently changed to be the community manager of CrowdSec, an innovative, open source and free security solution dedicated to even the odds against cyber criminals. Klaus has a long history being an active part of the danish infosec community both via OWASP Copenhagen and co-founding BSides København in 2019.    


Did you know that, every day across the Internet, each IP address is scanned hundreds of times? Or that more than 2,000 attacks are perpetrated, stealing 1.4 million personal records? That’s right, every single day! Today, there is a way to rebalance the odds and protect our resources through crowdsourced security and reputation. In 2021, our ways of living and working turned completely upside down in a matter of days. We all brought our companies home and our homes in our companies’ systems. Staying connected to our colleagues, friends and family became a critical necessity, which opened the door for hackers to cause disruption and we saw a huge increase of attacks all around the world.

 Even though worldwide spending on cybersecurity is predicted to reach $1 trillion in 2021 according to Forbes, the game will still be asymmetrical and all companies will keep being hacked regardless of their security budgets. Expensive security doesn’t mean better security. A new approach is needed.

 Join us for this talk so we can explore why a collaborative approach to security could contribute to solving the problem and how we could make the Internet safer together.

 Discover CrowdSec, a collaborative, free and open source security automation platform relying on both IP behavior analysis and IP reputation. CrowdSec identifies threats and shares IP addresses behind malevolent behaviors across its community, to allow everyone to block them preventively. Already used in 80 countries across 6 continents, the solution builds a real-time IP reputation database of currently ~200.000 ips that keeps growing every day and benefits all community members who have each other's backs while forming a global defense shield.