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Surveillance

The evolution of the National Security Agency’s dragnet under Presidents Bush and Obama. More »

As the Senate considers a bill to strengthen the nation’s cybersecurity, some questionable numbers keep creeping into the discussion. More »

Cellular systems constantly record the location of phones in their networks, data treasured by police and advertisers alike. The surveillance and privacy implications are simple: If someone knows where you are, they probably know what you are doing. More »

What we still don’t know about cellphone surveillance. More »

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How the NSA’s High-Tech Surveillance Helped Europeans Catch Terrorists

The debate about National Security Agency eavesdropping has left European investigators bemused. U.S. technology collects mountains of data that often aids their cases, they say. But there's no substitute for real human spying.

Podcast: NSA Surveillance and Intelligence Gathering

In the face of claims that the National Security Agency’s data collection program had prevented terrorist plots, ProPublica’s Sebastian Rotella took a closer look at one of those: David Coleman Headley’s foiled plan to attack a Danish newspaper.

No Warrant, No Problem: How the Government Can Get Your Digital Data

From subpoenas to secret court orders, the government has an arsenal of legal tools for sweeping up your personal data.

Defenders of NSA Surveillance Omit Most of Mumbai Plotter’s Story

Officials say National Security Agency intercepts stopped David Coleman Headley's planned attack in Denmark, but sources say a tip from the British led to his capture after the U.S. failed for years to connect multiple reports of terror ties.

The NSA Black Hole: 5 Basic Things We Still Don’t Know About the Agency’s Snooping

Mass Surveillance in America: A Timeline of Loosening Laws and Practices

The evolution of the National Security Agency’s dragnet under Presidents Bush and Obama.

The Best Stories on the Government’s Growing Surveillance

For background on the National Security Agency’s collection of phone and web records, here’s the best reporting on what else the government has been tracking.

Was Petraeus Borked?

When a D.C. video store revealed the Supreme Court nominee’s list of video rentals, it sparked a privacy backlash and a new law. Similarly, the Petraeus affair has put the government’s vast surveillance powers – even of elites – in a critical context.

Is $22.5 Million a Big Enough Penalty for Google?

The Federal Trade Commission called the penalty for privacy violations "substantial," but it amounts to a mere five hours' worth of revenue for the search colossus.

Announcing $22.5 Million Fine, FTC Says It Investigated Google’s Internet Tracking Early On

The trade commission now says it was looking into Google "well before" the company was outed by published reports saying the company secretly tracked Internet users.

How Do You Feel About Smartphone Surveillance? Our Readers Respond

Companies and law enforcement can mine your phone’s data for intimate details. ProPublica readers let us know what they think about it.

Does Cybercrime Really Cost $1 Trillion?

As the Senate considers a bill to strengthen the nation's cybersecurity, some questionable numbers keep creeping into the discussion.

Do You Have Concerns About Cellphone Surveillance and Privacy?

Your phone tracks where you go and what you do. Are you worried about it?

That’s No Phone. That’s My Tracker

Cellular systems constantly record the location of phones in their networks, data treasured by police and advertisers alike. The surveillance and privacy implications are simple: If someone knows where you are, they probably know what you are doing.

How Many Millions of Cellphones Are Police Watching?

What We Still Don’t Know About Cellphone Surveillance

Our FTC Privacy Story and Its Critics

Correspondence Between the FTC and ProPublica

How a Lone Grad Student Scooped the Government and What It Means for Your Online Privacy

Hobbled by government filters, a withering budget and limited legal clout, the Federal Trade Commission struggles to police an army of data miners bent on exploiting our online footprints.

Cellphone Companies Will Share Your Location Data - Just Not With You

Who does your location information really belong to?

Are State-Sponsored Hackers Targeting Your Gmail?

Google announced that it would notify Gmail users if they might be the target of a "state-sponsored attack." Help ProPublica figure out who's being targeted on Gmail and why.

Cheat Sheet: Behind The U.S. Cyberattacks on Iran

As long suspected, the Stuxnet cyberattacks on Iran’s nuclear enrichment program were a joint U.S.-Israeli project, but the computer worm’s release to the Internet at large was unintended, The New York Times reports.

Remember Stuxnet? Why the U.S. is Still Vulnerable

Years after the world’s scariest computer virus attack, not much has changed.

In the Evening Hours, CISPA Gets Some New Features

Privacy advocates say the House-passed cybersecurity bill falls short of safeguards needed to protect personal data collected while surfing the net.

Is CISPA SOPA 2.0? We Explain the Cybersecurity Bill

Our rundown on the debate over the latest controversial Internet bill and what CISPA could mean for you.

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