In an era where organisations are investing heavily in cyber defences, one of the greatest risks increasingly comes from within, not from malicious actors, but from trusted employees, contractors and partners making seemingly harmless decisions that unintentionally expose sensitive information, intellectual property and operational systems. Drawing on decades of experience in counterintelligence, insider threat investigations and corporate security leadership, Lou Bladel and Ian Clarke will explore why the unintentional insider threat has become one of the most urgent challenges facing modern organisations. This session will examine how evolving work practices, AI adoption, remote access, third-party ecosystems and human behaviour are reshaping organisational risk, and what leaders must do to build a stronger culture of awareness, accountability and resilience.