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Jeff Larson

News Applications Developer

Johns Hopkins and the Case of the Missing NSA Blog Post

The university, which works closely with the NSA, apologizes to a professor after he was asked to remove his post.

Revealed: The NSA's Secret Campaign to Crack, Undermine Internet Security

Newly revealed documents show that the NSA has circumvented or cracked much of the encryption that automatically secures the emails, Web searches, Internet chats and phone calls of Americans and others around the world. The project, referred to internally by the codename Bullrun, also includes efforts to weaken the encryption standards adopted by software developers.

NSA: Responding to this FOIA Would Help “Our Adversaries.”

Here’s what I got when I asked the NSA if they’re collecting my metadata.

New Maps and a New Plan for New York

FEMA's released new, preliminary flood insurance maps for New York City, which specify how likely areas are to flood. The new maps, which replace maps that used data from 1983, double the number of structures in flood zones.

How We Analyzed Medicare’s Drug Data

ProPublica obtained Medicare Part D data from the Centers for Medicare and Medicaid Services (CMS) under the Freedom of Information Act. Here follows more information about the data and how we analyzed it.

Prescriber Checkup

Medicare’s popular prescription-drug program serves more than 42 million people and pays for more than one of every four prescriptions written nationwide. Use this tool to find and compare doctors and other providers in Part D in 2015.

An Exchange About California’s Redistricting Process

An exchange between ProPublica and the California Redistricting Commission.

Message Machine

RIP EveryBlock

EveryBlock is gone, here's how we archive our apps.

Updated: State Gas Drilling Regulatory Staff Tracker

How big is the natural gas drilling regulatory staff in your state?

How Disaster Aid Recipients Voted on Sandy Relief

Though the Sandy relief bill passed both the Senate and the House, many members of Congress voted no despite their own states receiving millions of dollars in federal disaster assistance in 2012.

Housing Segregation: The Great Migration and Beyond

Explore the great migration of African Americans from 1940 to 2000 and segregation in Northern cities.

Anatomy of a News Map

Behind the scenes on our great migration graphic.

Iraq Blocks Syria's Request to Fetch Combat Helicopters from Russia

Mystery solved. Syria had requested to ferry attack helicopters from Russia over Iraq, but the flights hadn't happened. Now, the Iraqis say they denied permission.

To Retrieve Attack Helicopters from Russia, Syria Asks Iraq for Help, Documents Show

Documents show that Syria asked Iraqiauthorities to grant air access to fly in refurbished attack helicopters fromRussia, putting a spotlight on Iraq’s role in the nearly two-year conflict.

Syria Claims Turkey Committed 'Air Piracy,' New Documents Say

Hackers with the online group Anonymous posted new documents giving Syria’s version of how Turkey impounded a Syrian Arab Airlines passenger jet last month. The documents could not be authenticated.

Flight Records Say Russia Sent Syria Tons of Cash

The records of overflight requests show more than 200 tons of "bank notes" from Moscow to Damascus.

New Open Source Project: Daybreak, a Simple Key/Value Database for Ruby

A couple of weeks ago, in an article about the science behind the Message Machine project, we mentioned the custom key-value store we built to store non-relational data. Today, we're open sourcing the library which we're calling Daybreak.

Message Machine: Tracking Political Targeting

Political campaigns send many variations of each email to supporters. We've been collecting emails from political campaigns and tracking the variations. You can be a part of this project by forwarding political emails you get to emails@messagemachine.propublica.org.

Message Machine Starts Providing Answers

Political campaigns use massive databases to target their constituents. ProPublica's Message Machine is beginning to find some answers on how they do it.

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