Swedish train operator SJ prevented a commuter, Sebastian, from exploiting a loophole in its ticketing system. Sebastian discovered a method to purchase significantly discounted train tickets, saving approximately 40 percent on his travel costs. SJ identified the issue and intervened, blocking Sebastian’s attempts to utilize the hack. The company has since closed the loophole to prevent further exploitation. While Sebastian’s actions weren’t illegal, SJ maintains that the practice was unfair to other passengers. The incident highlights vulnerabilities in the railway’s pricing structure and the ongoing challenge of preventing fare evasion. SJ confirmed they are continuously working to refine their systems and ensure equitable pricing for all customers.