Gabriel Weinberg

Weinberg was born in Washington and grew up near Atlanta in a tight-knit family. His first programming “job” was writing a program for his mother to process orders online. In middle and high school he played soccer and tennis, spent a lot of time messing around with computers, and excelled in science, particularly physics.⁠[1][1][1][1]

He studied physics at the Massachusetts Institute of Technology (MIT), graduating in 2001; he did not go on to graduate study in physics and eventually wound up programming. In 2005 he completed graduate studies in technology policy at MIT, earning a graduate degree in Technology and Public Policy. While at MIT he started his first company, a portal for teachers to put lesson plans online, which failed because it was too early to market.⁠[2][1][1][3][1]

After graduating from MIT, Weinberg started NamesDatabase in Boston: users submitted their own email addresses, and other people could pay to get in touch with them. On March 20, 2006, United Online announced that it would acquire Opobox, the company that operated the site, for approximately $10 million in cash and incorporate it into its subsidiary Classmates Online. At the time the site had about 20 million registered members and about 50,000 paying subscribers, most of them outside the United States.⁠[1][4][4][4][1]

Around the same time he had recently married. The couple did not want to live in a big city and eventually settled near Paoli, about 30 miles from Philadelphia.⁠[1][1][1]

On September 25, 2008, Weinberg launched the search engine DuckDuckGo in Valley Forge, Pennsylvania, naming it after the children’s game Duck, Duck, Goose. The company began with a few servers in his basement, where he crawled the web himself; in the early days, after he crawled a honeypot site set up by the U.S. Federal Bureau of Investigation (FBI), FBI agents showed up at his door. Within a year of launch, DuckDuckGo was publicly announced to the Hacker News and reddit communities.⁠[5][6][1][3][6]

He later recalled that the starting point for the company was to look for what big search engines, because of their scale and business model, could not easily do; in his view, “what’s good for Google business is bad for Google users.” The initial idea was to combine search with the information and links that people had hand-selected over the previous decade on human-powered sources such as Wikipedia and Del.icio.us. Because he lacked the manpower to build a search engine from scratch, he used publicly available search results from Yahoo for the bulk of his searches, used his own programming to curate the top few results, and linked large numbers of popular searches to outside data sources such as WolframAlpha, Wikipedia, and Yelp to provide direct answers.⁠[1][7][1][1][1][1]

In May 2009, DuckDuckGo, led by the 29-year-old Weinberg, had only two employees and had released an iPhone search app and a Firefox toolbar that steered users away from parked domains and spam sites. He said the company worked with the Parked Domains Project, checking about 110 million domains a month and omitting parked domains from its results; he considered the idea that one search engine fits everyone fundamentally flawed, said DuckDuckGo aimed to attract the share of users who preferred its engine, and planned eventually to show far less advertising than other search engines.⁠[7][7][7][7][7][7][7]

On March 15, 2010, DuckDuckGo decided not to track users’ search histories. Weinberg said the privacy focus was not originally intentional: he planned to show only a few ads based on the search query and never thought he would need to track users. The company then began positioning itself as a privacy-focused search engine that does not track what users search for or where they have been.⁠[6][1][8]

In January 2011, Weinberg paid $7,000 to put up a billboard in San Francisco featuring DuckDuckGo’s duck logo and the words “Google tracks you. We don’t.”⁠[1][6]

In October 2011, Union Square Ventures, along with Scott Banister, Joshua Schachter, and others, invested in DuckDuckGo, and Union Square Ventures Managing Partner Brad Burnham joined the board. Weinberg said he had planned to delay raising capital until he saw a compelling reason to do so, which ended up being a delay of about 3.5 years; what prompted him to raise money was that, from the end of 2010, the search engine had started to click with a greater share of users.⁠[9][9][9][9]

For years Weinberg was DuckDuckGo’s only full-time employee; the company did not bring on its first official team member, Caine Tighe, until November 30, 2011. On December 1 of that year, the company moved out of Weinberg’s basement into a castle-like office building in Paoli.⁠[6][6]

DuckDuckGo’s monthly searches grew from 10 million in October 2011 to 45 million in October 2012. Weinberg said at the time that he had never aimed to maximize revenue, that he liked the lean, focused Craigslist model, and that he hoped one day to capture about 1% of the search market; describing himself as having “always been pretty cheap,” he served Costco water at the office rather than fancy bottled water. He was also working on improvements to the !bang feature, which lets users search other sites directly by typing an exclamation mark followed by the site name.⁠[1][1][1][1][1]

He said at the time that he had been in Silicon Valley just one day in the past 12 years and never appeared at big tech conferences, because that kind of lifestyle was not very family-oriented; he said his goal had never been to be Mark Zuckerberg but to do something interesting and unique.⁠[1][1]

Weinberg co-authored the startup customer-acquisition guide Traction: How Any Startup Can Achieve Explosive Customer Growth with Justin Mares; the UK Portfolio Penguin edition was published on October 29, 2015.⁠[10][10][2]

Google once owned the duck.com domain and pointed it at Google search for several years. After years of public and private complaints by Weinberg, Google gave the domain to DuckDuckGo in 2018; it was later used for the company’s email protection service.⁠[3][3]

In August 2018, OMERS Ventures, the venture arm of a Canadian pension fund, led a $10 million investment in DuckDuckGo and took a non-controlling share; it was the company’s largest round to date. Weinberg said the funds would be used for global hiring, tuning search results for local markets, and expanding marketing channels; the company then had 51 employees, said it had been profitable since 2014, and had previously taken only $3 million in institutional capital. Weinberg himself is also an angel investor.⁠[11][11][11][11][11]

On March 12, 2019, Weinberg appeared at a U.S. Senate Judiciary Committee hearing on the EU General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA). In his written testimony he argued that privacy legislation is not only pro-consumer but also pro-business and pro-advertising: DuckDuckGo collects no personal information at all and shows contextual ads based only on the current search query, has been profitable from such advertising since 2014, and in 2018 earned substantially more than the $25 million revenue threshold that subjects a company to the CCPA.⁠[12][12][5][5][5]

He described the digital advertising market as a duopoly and made three proposals: giving consumers a robust mechanism to opt out of online tracking, prohibiting monopoly platforms from combining data across their business lines, and blocking acquisitions that strengthen existing data monopolies.⁠[5][5][5]

On June 18, 2019, Super Thinking: The Big Book of Mental Models, a guide to mental models co-authored by Weinberg and Lauren McCann, was published by Portfolio. In an interview in July of that year, he said he had written the book with his wife over the previous two years.⁠[13][13][13][14]

On March 10, 2022, after Russia’s invasion of Ukraine, Weinberg tweeted that he was sickened by the invasion and that DuckDuckGo was rolling out search updates that down-rank sites associated with Russian disinformation. When some users questioned whether this was censorship, he replied that search engines by definition put more relevant content higher and less relevant content lower, and that this was search ranking relevancy rather than censorship.⁠[15][15][15]

In May 2022, security researcher Zach Edwards found that the DuckDuckGo browser allowed trackers related to bing.com and linkedin.com on third-party websites. On May 23, Weinberg confirmed that this was because the company’s search syndication agreement with Microsoft prevented it from doing more to Microsoft-owned properties, stressed that the restriction applied only to the browser and did not affect the search engine, and said the company had been continually pushing and was working with Microsoft to remove the restriction.⁠[16][16][16][16][16][16]

He also said that blocking third-party tracking scripts before they load on third-party websites was an above-and-beyond protection that most browsers do not even attempt, and that even with the restriction users were getting more privacy protection than with Safari, Firefox, and other browsers. He later apologized publicly, and DuckDuckGo extended its tracker blocking to include Microsoft.⁠[17][17][8]

On September 21, 2023, Weinberg appeared as a witness for the U.S. Department of Justice in the antitrust case U.S. v. Google, tried in federal court in Washington. He testified that Google’s default search deals with phone companies and equipment manufacturers made it hard for small search engines to compete and that “the search defaults are the primary barrier”: changing the default search engine away from Google on all of a user’s devices required 30 to 50 steps, whereas the process could be shortened to one click per device.⁠[3][8][8][8][8]

He testified that DuckDuckGo handled only 2.5% of U.S. search queries and that its internal surveys showed privacy was users’ biggest concern; under questioning from Google, he acknowledged that much of DuckDuckGo’s search capability originated with Microsoft’s Bing rather than being homegrown.⁠[8][8][8]

In November 2025, DuckDuckGo launched a Substack publication, “Inside DuckDuckGo,” and Weinberg became one of the hosts of its video and audio interview series Duck Tales, which explains new features through casual conversations with team members; the first episodes covered topics such as filtering AI-generated images, tuning AI personality, using AI to make easter-egg logos, and the browser’s scam blocker. DuckDuckGo has hundreds of easter-egg logos that appear for certain searches, and he personally adds them in his spare time.⁠[18][18][18][3][3]

After the wave of AI-related announcements at Google I/O in May 2026, Weinberg said that Google was force-feeding AI with no way to opt out and that its results were getting worse as a result; DuckDuckGo wanted to let users decide for themselves how much AI to use, did not collect search histories or chats, and used nothing for AI training. The company said that over the Memorial Day long weekend its U.S. mobile app installations rose 18.1% week over week on average.⁠[19][19][19][19]

In July 2026, Weinberg issued a public request for grant proposals, explaining that his family had for the past five years been giving grants to small U.S. nonprofits under set criteria and planned to expand the effort gradually. The grants range from $25,000 to $200,000 a year, with preference for organizations founded in the last five years with budgets under $1 million, in areas including science acceleration, voting reform, government transparency, criminal justice reform, direct aid, and mainstreaming critical thinking; privacy is covered separately by DuckDuckGo’s independent donations.⁠[20][20][20][20][20]

In September 2026, Weinberg called for support for a crowdfunding project by School of Thought to create a microsite game called GAME OVER that explains AI risks to the public. He is an adviser to the project and has advised the organization, which promotes critical thinking, for more than a decade. His writing in recent years has argued for taking AI risks seriously and enacting strong AI regulation, especially to mitigate the impact of AI on the job market.⁠[21][21][21][21]

DuckDuckGo: Official website: https://duckduckgo.com/ (opens in a new window).⁠[6]

Personal website: https://gabrielweinberg.com/ (opens in a new window)⁠[2]

X: Public account: https://x.com/yegg (opens in a new window)⁠[15][22]