How California sent residents’ personal health data to LinkedIn
The state’s health insurance exchange transmitted pregnancy and domestic abuse data during a marketing campaign. It is reviewing its website practices.
The Markup challenges technology to serve the public good.
Our journalism is actionable and drives real-world impact. Explore our investigations, tools, and blueprints to see how.
This Just In
After Markup investigation, LinkedIn and Google face lawsuit alleging improper access to health data
The suit accuses the companies of receiving personal information through California’s state health insurance exchange.
Kids should avoid AI companion bots—under force of law, assessment says
With input from a Stanford lab, Common Sense Media concludes the AI systems can exacerbate problems like addiction and self harm.
Tools
Our tools hold institutions accountable for the way they use technology, pulling back the curtain so readers can see for themselves how technology affects them.
Here’s Every Local Police Agency Enforcing for ICE
Partnerships more than doubled during the first months of Trump's current term under a program known as 287(g)
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Launching Blacklight Query, a Tool to Scan Websites for Privacy at Scale
Inspect batches of websites for user-tracking tech with our new open-source command-line tool
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Related: Announcing Three New Features for the Blacklight Privacy Inspector
Investigations
Our investigations use data-driven journalism and our own engineering expertise to reveal the hidden impacts of how tech is used.
Trump Is Creating a Deportation Army of Local Cops
The number of state and local ICE partnerships has spiked this year—especially in Florida
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Dating App Cover-Up: How Tinder, Hinge, and Their Corporate Owner Keep Rape Under Wraps
The company behind more than a dozen dating apps, Match Group, has known for years about the abusive users on its platforms, but chooses to leave millions of people in the dark
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Related: When Drivers Are Attacked, Uber Leaves Police Waiting for Help
How Meta Brings in Millions Off Political Violence
CalMatters and The Markup used Facebook’s AI model to count the millions of dollars it makes after violent news events
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Related: Congressional Report Finds Meta and Tax Prep Companies “Recklessly” Shared Taxpayers’ Data
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Blueprints
We publish our datasets, methodologies, story recipes, and processes so communities, journalists, and researchers can check our work and build on our reporting.
How Do I Protect My Privacy If I’m Seeking an Abortion?
A guide to keeping your plans private through every step of an abortion in any state, including Florida and South Dakota
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Related: Without a Trace: How to Take Your Phone Off the Grid
We Made an Emergency Alert Guide To Help Californians Navigate a Complicated Process. Here’s How To Do This In Any State
CalMatters and The Markup reported on how residents in each of California’s 58 counties can sign up for local emergency alerts, and found a few surprises along the way. Here’s how you can build the same guide in your state
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Related: How to Sign Up for Local Emergency Alerts Before Natural Disasters Strike
How Do I Prepare My Phone for a Protest? (Updated 2024)
Simple steps to take before hitting the streets
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Related: Car Tracking Can Enable Domestic Abuse. Turning It Off Is Easier Said Than Done
Impact
Our journalism has driven real-world change—from changes in government policy to the removal of tracking technology.
After Markup investigation, LinkedIn and Google face lawsuit alleging improper access to health data
The suit accuses the companies of receiving personal information through California’s state health insurance exchange.
Our Real-World Impact In 2024
The Markup’s reporting led to federal lawsuits, local government reforms, and much more
Bill Would Force V.A. to Overhaul Suicide Prevention Algorithm That Favors White Men
The legislation would require the agency to incorporate factors linked to elevated suicide risk among women veterans into its AI program
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Original Investigation: V.A. Uses a Suicide Prevention Algorithm To Decide Who Gets Extra Help. It Favors White Men.
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