Mario Lechończak

On 6 May 2026, I had the opportunity to attend AWS Summit Warsaw at EXPO XXI in Warsaw. The event gathered cloud engineers, architects, developers, and technology leaders from across Poland and Europe to discuss the future of cloud computing, AI, and modern infrastructure. This year’s summit was heavily AWS-focused, especially around AI, serverless technologies, cloud modernization, and infrastructure automation. There were many technical sessions and customer stories showing how companies are using AWS to scale their platforms and build modern cloud-native applications....

Data exfiltration is the unauthorized transfer of data from an organization’s systems to an external destination controlled by an attacker. In AWS environments, one of the most common exfiltration vectors involves copying data from company S3 buckets to attacker-controlled ones. It’s deceptively simple, surprisingly effective, and — if you’re not prepared — almost impossible to detect in time. In this article, we’ll walk through a realistic attack scenario step by step, and then close the door on the attacker — one layer at a time....

I’m thrilled to announce that I’ve been accepted into the AWS Community Builders program — specifically in the Networking & Content Delivery category. Networking has been my core focus for a while now, and being recognized as part of this community means a lot to me. The AWS Community Builders program is an initiative by Amazon Web Services that connects AWS enthusiasts and technical practitioners who are passionate about sharing knowledge with the broader community....