Simon Fondrie-Teitler

Infrastructure Engineer

Simon Fondrie-Teitler kept The Markup’s servers secure and stable. He left in June 2023.

Before joining The Markup, he worked as a software developer, systems administrator, and SRE for various startups as well as The University of Wisconsin–Madison.

He has also contributed to Free Software projects, including Debian and MediaGoblin.

Citizen Browser

Germany’s Far-Right Political Party, the AfD, Is Dominating Facebook This Election

Ahead of a national vote this month, Citizen Browser data shows that posts promoting the AfD party appeared more than three times as often as rivals'

September 22, 2021 08:00 ET

Illustration of jumbled Facebook like icons, blue clouds, squiggles, and junk code. Disparate eyes, ears and magnifying glasses are scattered throughout the art.

Citizen Browser

Facebook Rolls Out News Feed Change That Blocks Watchdogs from Gathering Data

The tweak, which targets the code in accessibility features for visually impaired users, drew ire from researchers and those who monitor the platform

September 21, 2021 08:00 ET

Ben Shapiro speaking at the 2018 Conservative Political Action Conference

Citizen Browser

How The Daily Wire Uses Facebook's Targeted Advertising to Build Its Brand

The social media giant's powerful targeting tools appear to be part of Ben Shapiro’s success in growing his audience on the platform

August 10, 2021 08:00 ET

Facebook-like thumb with images of Black people and culture

Citizen Browser

Facebook Got Rid of Racial Ad Categories. Or Did It?

Our Citizen Browser project found an array of proxies through which advertisers can target Black Facebook users, among other demographics

July 9, 2021 08:00 ET

Citizen Browser

After Repeatedly Promising Not to, Facebook Keeps Recommending Political Groups to Its Users

The company announced the policy as a way to stop spreading divisive content

June 24, 2021 08:00 ET

An illustration of a needle with an angry facebook emoji with hand pushing back

Citizen Browser

Facebook Said It Would Stop Recommending Anti-Vaccine Groups. It Didn’t

As COVID-19 surged, the social media company pointed users to all sorts of anti-vaccine and anti-mask groups

May 20, 2021 08:00 ET

An illustration of a Facebook thumb in a sling

Citizen Browser

How Big Pharma Finds Sick Users on Facebook

We found drug ads targeted at users interested in everything from bourbon to therapy

May 6, 2021 08:00 ET

An illustration of a wall of credit cards that is dividing a group of people

Citizen Browser

Credit Card Ads Were Targeted by Age, Violating Facebook’s Anti-Discrimination Policy

Such ads, along with other age-targeted financial product ads, may violate civil rights laws, attorneys say

April 29, 2021 08:00 ET

Show Your WorkCitizen Browser

How We Built a Facebook Feed Viewer

Split Screen invites readers to explore how different people experience Facebook

March 11, 2021 08:00 ET

Citizen Browser

Introducing “Split Screen”

A new tool from The Markup’s Citizen Browser project

March 11, 2021 08:00 ET

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