• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
Tech

Facebook failed to catch blatant misinformation in ads ahead of Brazil’s 2022 election — for the fourth time

By
Barbara Ortutay
Barbara Ortutay
and
The Associated Press
The Associated Press
Down Arrow Button Icon
By
Barbara Ortutay
Barbara Ortutay
and
The Associated Press
The Associated Press
Down Arrow Button Icon
August 15, 2022, 6:03 AM ET
Students participate in a demonstration in defense of democracy and justice and against Brazilian President Jair Bolsonaro in Sao Paulo
Students participate in a demonstration in defense of democracy and justice and against Brazilian President Jair Bolsonaro in Sao PauloNELSON ALMEIDA/AFP via Getty Images

Facebook failed to detect blatant election-related misinformation in ads ahead of Brazil’s 2022 election, a new report from Global Witness has found, continuing a pattern of not catching material that violates its policies the group describes as “alarming.”

The advertisements contained false information about the country’s upcoming election, such as promoting the wrong election date, incorrect voting methods and questioning the integrity of the election — including Brazil’s electronic voting system.

This is the fourth time that the London-based nonprofit has tested Meta’s ability to catch blatant violations of the rules of its most popular social media platform— and the fourth such test Facebook has flubbed. In the three prior instances, Global Witness submitted advertisements containing violent hate speech to see if Facebook’s controls — either human reviewers or artificial intelligence — would catch them. They did not.

“Facebook has identified Brazil as one of its priority countries where it’s investing special resources specifically to tackle election related disinformation,” said Jon Lloyd, senior advisor at Global Witness. “So we wanted to really test out their systems with enough time for them to act. And with the U.S. midterms around the corner, Meta simply has to get this right — and right now.”

Brazil’s national elections will be held on Oct. 2 amid high tensions and disinformation threatening to discredit the electoral process. Facebook is the most popular social media platform in the country. In a statement, Meta said it has “ prepared extensively for the 2022 election in Brazil.”

“We’ve launched tools that promote reliable information and label election-related posts, established a direct channel for the Superior Electoral Court (Brazil’s electoral authority) to send us potentially-harmful content for review, and continue closely collaborating with Brazilian authorities and researchers,” the company said.

In 2020 Facebook began requiring advertisers who wish to run ads about elections or politics to complete an authorization process and include “paid for by” disclaimers on them, similar to what it does in the U.S. The increased safeguards follow the 2016 U.S. presidential elections, when Russia used rubles to pay for political ads designed to stoke divisions and unrest among Americans.

Global Witness said it broke these rules when it submitted the test ads (which were approved for publication but were never actually published). The group placed the ads from outside Brazil, from Nairobi and London, which should have raised red flags.

It was also not required to put a “paid for by” disclaimer on the ads and did not use a Brazilian payment method — all safeguards Facebook says it had put in place to prevent misuse of its platform by malicious actors trying to intervene in elections around the world.

“What’s quite clear from the results of this investigation and others is that their content moderation capabilities and the integrity systems that they deploy in order to mitigate some of the risk during election periods, it’s just not working,” Lloyd said.

The group is using ads as a test and not regular posts because Meta claims to hold advertisements to an “even stricter” standard than regular, unpaid posts, according to its help center page for paid advertisements.

But judging from the four investigations, Lloyd said that’s not actually clear.

“We we are constantly having to take Facebook at their word. And without a verified independent third party audit, we just can’t hold Meta or any other tech company accountable for what they say they’re doing,” he said.

Global Witness submitted ten ads to Meta that obviously violated its policies around election-related advertising. They included false information about when and where to vote, for instance and called into question the integrity of Brazil’s voting machines — echoing disinformation used by malicious actors to destabilize democracies around the world.

In another study carried out by the Federal University of Rio de Janeiro, researchers identified more than two dozen ads on Facebook and Instagram, for the month of July, that promoted misleading information or attacked the country’s electronic voting machines.

The university’s internet and social media department, NetLab, which also participated in the Global Witness study, found that many of those had been financed by candidates running for a seat at a federal or state legislature.

This will be Brazil’s first election since far-right President Jair Bolsonaro, who is seeking reelection, came to power. Bolsonaro has repeatedly attacked the integrity of the country’s electronic voting system.

“Disinformation featured heavily in its 2018 election, and this year’s election is already marred by reports of widespread disinformation, spread from the very top: Bolsonaro is already seeding doubt about the legitimacy of the election result, leading to fears of a United States-inspired January 6 ‘stop the steal’ style coup attempt,” Global Witness said.

In its previous investigations, the group found that Facebook did not catch hate speech in Myanmar, where ads used a slur to refer to people of East Indian or Muslim origin and call for their deaths; in Ethiopia, where the ads used dehumanizing hate speech to call for the murder of people belonging to each of Ethiopia’s three main ethnic groups; and in Kenya, where the ads spoke of beheadings, rape and bloodshed.

Sign up for the Fortune Features email list so you don’t miss our biggest features, exclusive interviews, and investigations.

About the Authors
By Barbara Ortutay
See full bioRight Arrow Button Icon
By The Associated Press
See full bioRight Arrow Button Icon

Latest in Tech

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Tech

Healthchief executive officer (CEO)
Elon Musk says humans are ‘pre-programmed to die’ and longevity is ‘solvable’, raising huge questions about the future of health
By Marco Quiroz-GutierrezJanuary 14, 2026
5 hours ago
Alphabet and Google CEO Sundar Pichai seated next to Apple CEO Tim Cook at a formal dinner.
AIApple
What Apple’s AI deal with Google means for the two tech giants, and for $500 billion ‘upstart’ OpenAI
By Jeremy Kahn and Beatrice NolanJanuary 13, 2026
13 hours ago
A smartphone displaying the Google Gemini logo.
AIEye on AI
As ‘agentic commerce’ gains ground, companies shouldn’t put too much faith in ‘GEO,’ one industry insider warns
By Jeremy KahnJanuary 13, 2026
19 hours ago
AIChatbots
Being mean to ChatGPT can boost its accuracy, but scientists warn you may regret it
By Marco Quiroz-GutierrezJanuary 13, 2026
21 hours ago
AIGoldman Sachs Group
‘Humans could go the way of horses’: Goldman calculated how bad the AI ‘job apocalypse’ will be—and its analysts were pleasantly surprised
By Jim EdwardsJanuary 13, 2026
21 hours ago
Mark Zuckerberg
Future of WorkMeta
Meta is changing its performance review to reward output over effort, taking a page from Amazon and X
By Jake AngeloJanuary 13, 2026
22 hours ago

Most Popular

placeholder alt text
Tech
Elon Musk asked people to upload their medical data to X so his AI company could learn to interpret MRIs and CT scans
By Sasha RogelbergJanuary 11, 2026
3 days ago
placeholder alt text
Success
Despite his $2.6 billion net worth, MrBeast says he’s having to borrow cash and doesn’t even have enough money in his bank account to buy McDonald’s
By Emma BurleighJanuary 13, 2026
23 hours ago
placeholder alt text
Newsletters
The oil CEO who stood up to Trump is a follower of the disciplined 'Exxon way' and has a history of blunt statements
By Jordan BlumJanuary 13, 2026
1 day ago
placeholder alt text
Economy
The longer the Supreme Court delays its tariff decision, the better it is for President Trump
By Jim EdwardsJanuary 13, 2026
1 day ago
placeholder alt text
AI
'Godfather of AI' says the technology will create massive unemployment and send profits soaring — 'that is the capitalist system'
By Jason MaJanuary 12, 2026
2 days ago
placeholder alt text
Economy
Treasury spent $276 billion in interest on the national debt in the final three months of 2025, says the CBO—up $30 billion from a year prior
By Eleanor PringleJanuary 12, 2026
2 days ago

© 2025 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.