We are in the early stages of a wave of artificial intelligence (AI) and quantum computing that will change the security landscape as we know it. It is an inflection point that will force the reinvention of workflows, operating models, and the assumptions that security practitioners have relied on for years. Many emerging professionals have only ever known a tool-first culture, and many of the leaders who built the earlier frameworks are no longer here to pass down their reasoning. Yet the velocity of threats continues to increase. Technology amplifies their impact. In times like this, there can be the temptation to seek the easy route – the allure of the latest miracle tool. Each new platform arrives with a promise of transformation, and each new dashboard is perceived as the breakthrough the sector has been waiting for. However, as the field pursues these solutions, it may unintentionally stray from the first principles that once anchored it – understanding the fundamentals of why the security function exists, what it means to protect, and how security should integrate with the mission of an organization rather than operate as an isolated technical function. The result is an industry facing significant challenges – oversupplied with tools, lacking a strategic presence at the executive level, and struggling to articulate its value to the very organizations it was designed to safeguard. The way to overcome these challenges is to anchor back into first principle thinking. Without a clear return to these foundational concepts, organizations risk building security programs that are fast, modern – and fundamentally misaligned with their mission. With access to 175 years of archives, Pinkerton has reflected on lessons within the security industry and is positioned to lend a unique perspective on the past, present, and future. The last time the world faced a transformation of this scale was during the 1820s, when railroads and steam power carved out the routes that would underpin modern transportation and commerce – and subsequently, the security industry itself. At the center of this change was Chicago, Illinois, a burgeoning village on the southeastern shore of Lake Michigan that transitioned to an industrial and railroad hub by the 1850s. As the trains converged and the population surged, so too did the undercurrent of crime. In this crucible, Allan Pinkerton, founder of Pinkerton’s National Detective Agency, established a pioneering detective and security force laying the foundation for modern private security and law enforcement practices. The advent of AI and quantum computing represents a shift of similar magnitude. AI is laying down new lines that will dictate how people, information, and threats travel, redrawing the terrain once again. To survive this next phase of evolution, security leaders must reconnect with the humanistic core of the profession. They must understand the root causes they are protecting against, the objectives their organization is truly pursuing, and the value that security preserves. Lessons learned Pinkerton and Lincoln: The origins of modern security Pinkerton’s approach to intelligence and security is grounded in values that have defined the Agency since its founding – values demonstrated in Allan Pinkerton’s work alongside Abraham Lincoln. The partnership between Pinkerton and Lincoln began in 1855 in Chicago, Illinois, 13 years after Pinkerton immigrated to the United States. Lincoln, then a railroad attorney, drafted an agreement between Pinkerton & Co. and seven Midwest railroads that led to the establishment of the Northwestern Police Agency, later named Pinkerton’s National Detective Agency. Securing such a significant agreement was indicative of an already well-established and formidable reputation Pinkerton had for the pursuit of justice – he had already survived at least two assassination attempts from a couple of bad actors who didn’t like how Pinkerton derailed their nefarious schemes. Chicago was one of the fastest growing cities in the country and the hub of ten trunk lines, with 58 passenger trains and 38 freight trains arriving daily. It was said that the Illinois Central Railroad was the first great ‘St. Louis cut-off’ – a trip that could be made between Chicago and St. Louis in 24 hours. Chicago became ‘The Queen of the West,’ the first stop for many traveling to the western frontier. It had also earned an unenviable reputation for crime. The agreement, detailed and forward-thinking, laid the ground work for a long and trusted professional relationship. Executive Protection for the Highest Office By 1861, the country was on the verge of fracture. Rumors of secession and violence swirled around Lincoln’s election, and reports of an assassination plot surfaced as he prepared to travel to Washington, D.C., for his inauguration. At the end of January 1861, S.M. Felton, the President of the Philadelphia, Wilmington, and Baltimore Railroad, wrote to Pinkerton asking him to investigate threats along the line. By February 3, Pinkerton and a team of his best detectives – Kate Warne (Pinkerton’s, and likely America’s, first female detective), Hattie Lawton, Timothy Webster, Harry W. Davies, and Charles D.C. Williams – had launched an in-depth investigation, traveling to critical junctures along the railroad. Pinkerton and his operatives confirmed that a group in Baltimore planned to attack Lincoln’s train during its scheduled stop. Acting on that intelligence, Pinkerton quickly developed a plan to change the route and conceal the President-elect’s travel. Late on February 22, 1861, Lincoln boarded a night line train in Philadelphia, accompanied by Pinkerton, Warne, and George H. Bangs, the Agency’s first Superintendent and General Manager. Traveling quietly under the cover of night, the group arrived safely in Washington, D.C. at dawn on February 23. On March 4, Lincoln took the oath of office as the 16th President of the United States. The Baltimore operation became a model for modern protective intelligence. By combining research and intelligence with clandestine tactics and well-orchestrated maneuvers, Pinkerton not only ensured the President-elect’s safety but also established a legacy of intelligence and security operations that would become the hallmark of his agency. The birth of the secret service When the Civil War began in April 1861, Lincoln again turned to Pinkerton…