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— CH. 1 · INTRODUCTION —

LinkedIn

~8 min read · Ch. 1 of 6
6 sections
  • LinkedIn opened its doors on the 5th of May 2003, and within a decade it had mapped out something its founders called an "economic graph" - a comprehensive digital picture of the world's job market. But what exactly is this platform, and how did a small startup from Mountain View, California grow into a network of more than 1.2 billion registered members across over 200 countries and territories?

    Reid Hoffman and a founding team drawn largely from PayPal and Socialnet.com built LinkedIn not as a place to share photos of friends, but as a tool for professional networking and career development. The questions this documentary will explore are: how did that original idea survive a financial crisis, a privacy scandal, and a $26.2 billion acquisition? And what does it mean for workers, researchers, and governments when one platform holds the professional data of more than a billion people?

  • In December 2002, Reid Hoffman gathered a founding team that included Allen Blue, Eric Ly, Jean-Luc Vaillant, Lee Hower, Konstantin Guericke, Stephen Beitzel, David Eves, Ian McNish, Yan Pujante, and Chris Saccheri. Many had worked together at PayPal or Socialnet.com, and they shared a conviction that professional networking deserved its own dedicated platform.

    Financing came quickly. Sequoia Capital led the Series A investment in late 2003. By August 2004, the platform had reached 1 million users. The business hit its first month of profitability in March 2006, a milestone that gave investors reason for confidence. By April 2007, membership had crossed 10 million, prompting the company to open offices in India, Australia, and Ireland.

    In June 2008, Sequoia Capital, Greylock Partners, and other venture capital firms purchased a 5% stake in the company for $53 million, valuing the business at approximately $1 billion. By December 2010, private market valuations had climbed to $1.575 billion. In October of that same year, Silicon Valley Insider placed LinkedIn at No. 10 on its Top 100 List of most valuable startups.

    The company filed for an initial public offering in January 2011. When its first shares traded on the New York Stock Exchange on the 19th of May 2011 under the symbol LNKD at $45 per share, they rose as much as 171% on that single day and closed at $94.25 - more than 109% above the IPO price. By that point, the company employed around 2,100 full-time staff, compared to 500 just one year earlier.

  • In February 2016, following an earnings report, LinkedIn's shares dropped 43.6% within a single day, falling to $108.38 per share. The company lost $10 billion of its market capitalization that day alone. The dramatic decline made what came next all the more striking.

    In June 2016, Microsoft announced it would acquire LinkedIn for $196 a share, a total value of $26.2 billion. It was the largest acquisition Microsoft had ever made, a record that stood until the company purchased Activision Blizzard in 2022. The deal was structured as an all-cash, debt-financed transaction.

    Microsoft committed to letting LinkedIn "retain its distinct brand, culture and independence." Jeff Weiner would remain as CEO, reporting to Microsoft's CEO Satya Nadella. Analysts believed Microsoft saw a path to integrating LinkedIn with its Office product suite. The deal closed on the 8th of December 2016.

    Soon after the acquisition, LinkedIn rolled out a new desktop version designed to bring the user experience closer to the mobile app. Features that had seen little use were quietly removed, including contact tagging and filtering. Some users complained about the missing capabilities, as well as slowness and bugs in the updated version. The transition was not seamless, but it set the stage for a platform with the resources of one of the world's largest technology companies behind it.

    By 2022, LinkedIn was earning $13.8 billion in revenue, compared to $10.3 billion in 2021.

  • In June 2012, a hacker named Yevgeniy Nikulin and others stole cryptographic hashes of approximately 6.4 million LinkedIn user passwords and published them online. Security experts were quick to criticize LinkedIn for not salting its password file and for using only a single iteration of SHA-1, a relatively weak hashing approach. LinkedIn added two-factor authentication on the 31st of May 2013.

    The 2012 breach turned out to be worse than initially understood. In May 2016, 117 million LinkedIn usernames and passwords appeared for sale online for the equivalent of $2,200. Investigators believed these credentials originated from the original 2012 hack, with the number of compromised accounts having been significantly underestimated at the time.

    In April 2021, a breach affecting 500 million users was disclosed. Two months later, in June 2021, a separate incident was thought to have exposed the data of 92% of users, including contact and employment information. LinkedIn maintained that the data was assembled through web scraping from LinkedIn and other sites, describing it as a violation of its Terms of Service rather than a system breach.

    A later allegation, named "Browsergate" by the group Fairlinked e.V., claimed that LinkedIn had been covertly scanning users' browsers for installed extensions, potentially affecting 405 million people. The group alleged that JavaScript on the platform scanned for over 6,000 browser extensions and that harvested data was shared with a cybersecurity firm. LinkedIn denied that the data was used to infer sensitive personal information, saying it was collected only to detect Terms of Service violations. Two class action lawsuits followed in California, and a further lawsuit was filed in Germany.

    In September 2024, LinkedIn suspended its use of UK user data for AI model training after the Information Commissioner's Office raised concerns. The platform had quietly opted in users globally for that data use; following ICO feedback, LinkedIn paused the practice for UK users and provided an opt-out option.

  • Russia banned LinkedIn in 2016 after a Moscow court ruled the platform had violated a data retention law requiring Russian citizens' personal data to be stored on servers within the country. The relevant law had been in force since 2014. The ban was upheld on the 10th of November 2016, and all Russian internet service providers began blocking the platform. LinkedIn's mobile app was removed from the Google Play Store and iOS App Store in Russia in January 2017.

    In Kazakhstan, the platform was blocked in July 2021. In China, the situation played out differently over many years. After briefly being blocked in February 2011 during calls for a "Jasmine Revolution," access was restored within a day. In February 2014, LinkedIn launched a Simplified Chinese language version, and CEO Jeff Weiner acknowledged in a blog post that the platform would have to censor some user-posted content to comply with Chinese rules.

    By October 2021, Microsoft confirmed it would shut down LinkedIn in China and replace it with InJobs, a China-exclusive app, citing difficulties in the operating environment and increasing compliance requirements. In May 2023, LinkedIn announced it would phase out the InJobs app by the 9th of August 2023.

    In September 2021, LinkedIn blocked the profiles of several US journalists in China, including Bethany Allen-Ebrahimian, Melissa Chan, Greg Bruno, Jojje Olsson, and J. Michael Cole.

    Meanwhile, intelligence agencies in multiple countries raised concerns about the platform being used for espionage. France's internal and external security directorates concluded that Chinese spies had used LinkedIn to target thousands of business and government officials. In 2017, Germany's Federal Office for the Protection of the Constitution published information alleging that Chinese intelligence services had created fake LinkedIn profiles to gather information on German politicians and government officials.

  • By November 2023, LinkedIn had reached a member count of one billion. As of March 2026, the registered user base stood at 1.3 billion. In February 2026, the website recorded 1.4 billion monthly visits.

    The demographics of that user base skew toward early and mid-career professionals. As of late 2025, the 25-34 age group made up 33.4% of all users. The 18-24 group accounted for 20.5%, while users aged 35-54 represented 15.9%. Only 1.8% of users were aged 55 or older. Geographically, the United States remained the largest market with approximately 230 million users, followed by India with 130 million and Brazil with 71 million.

    From 2015, most of the company's revenue came from selling access to information about its members to recruiters and sales professionals. Since 2017-94% of business-to-business marketers have used the platform to distribute content to their audiences.

    In May 2024, LinkedIn launched its first puzzle games - Pinpoint, Queens, and Crossclimb - on its mobile and online platforms. These games were designed in part following the model of The New York Times' integration of Wordle, keeping users engaged and in friendly competition with their networks. The games refresh daily and track completion time per user. LinkedIn Games has since expanded to include Patches, Zip, Mini Sudoku, and Tango.

    In May 2026, LinkedIn announced a reduction of its global workforce by approximately 5%, affecting around 875 employees across engineering, product, and marketing. The cuts came even as the company reported record quarterly revenue exceeding $5 billion. CEO Daniel Shapero, who had succeeded Ryan Roslansky in April 2026, framed the layoffs as part of a structural pivot toward AI infrastructure.

Common questions

When was LinkedIn founded and who created it?

LinkedIn was founded in December 2002 by Reid Hoffman and a team that included Allen Blue, Eric Ly, Jean-Luc Vaillant, and others drawn largely from PayPal and Socialnet.com. The platform launched publicly on the 5th of May 2003.

How much did Microsoft pay to acquire LinkedIn?

Microsoft acquired LinkedIn for $26.2 billion, at $196 per share, announced in June 2016. The deal closed on the 8th of December 2016 and was the largest acquisition Microsoft had ever made at the time.

How many users does LinkedIn have as of 2026?

As of March 2026, LinkedIn has 1.3 billion registered users from over 200 countries and territories. In February 2026, the platform recorded 1.4 billion monthly visits.

What happened in the 2012 LinkedIn data breach?

In June 2012, hacker Yevgeniy Nikulin and others stole cryptographic hashes of approximately 6.4 million LinkedIn user passwords and published them online. The breach was later found to be larger than first estimated: in May 2016, 117 million LinkedIn usernames and passwords were offered for sale online for the equivalent of $2,200, believed to originate from the same 2012 hack.

Why did Russia ban LinkedIn?

A Moscow court ruled in 2016 that LinkedIn violated a Russian data retention law requiring personal data of Russian citizens to be stored on servers within Russia. The ban was upheld on the 10th of November 2016, and all Russian internet service providers began blocking the platform. LinkedIn's mobile app was also removed from app stores in Russia in January 2017.

What is LinkedIn's economic graph project?

The economic graph was a goal set by then-CEO Jeff Weiner in 2012 to build a comprehensive digital map of the world economy within a decade. The project was designed to include all job listings worldwide, all skills required for those jobs, all professionals who could fill them, and all companies at which they work. In June 2014, LinkedIn announced a search architecture called Galene to give users access to the economic graph's data.

All sources

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