What happens when a company’s biggest vulnerability isn’t its software, but its communication?In this episode of Technical Debt: Design, Risk and Beyond, hosts Maxim Silaev and Nikita Golovko explore the collapse of Interserve, a UK-based outsourcing and construction giant that suffered a major data breach in 2020, exposing the personal data of over 100,000 employees and resulting in a £4.4 million fine from the Information Commissioner’s Office.The breach was more than a phishing email gone wrong. It was the inevitable outcome of years of architectural neglect, fragmented systems, poor training, and missing communication between business and technology. Maxim breaks down the technical side: outdated software, legacy infrastructure, weak identity management, and a dangerous overreliance on trust assumptions: classic security debt. Nikita then connects the dots to organizational behavior: silos, misaligned incentives, and a culture where IT was reactive instead of strategic.Together they uncover:The forms of technical and organizational debt that led to Interserve’s downfall;How communication debt amplifies security risk;The hidden “single points of failure” in both systems and decision-making;How AI and automation could have helped detect risks earlier;Why architecture and culture must evolve together.Interserve’s story is a case study in how security failures are often symptoms, not causes, the result of decades of accumulated technical and human debt.Reach us @ LinkedIn: https://www.linkedin.com/in/maxim-silaevhttps://www.linkedin.com/in/dr-nikita-golovko

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