IBOV 172,457.76 ▲ 0.66% IPC MEX 71,204.98 ▼ 0.84% MERVAL 2,848,945 — — USD/BRL5.67▲ 0.45% USD/MXN18.52▼ 0.42% USD/CLP994.16▼ 0.13% USD/COP3,302▲ 0.70% USD/PEN3.40▼ 0.16% USD/ARS1,544▼ 0.11% USD/UYU40.59▲ 2.33% USD/PYG6,196▲ 2.33% USD/BOB11.59▼ 0.37% USD/DOP60.59▲ 1.85% USD/CRC442.74▼ 0.10% USD/GTQ7.64▲ 2.06% USD/HNL26.91▲ 2.15% USD/NIO36.62▲ 2.73% USD/VES909.35▼ 0.13% USD/PAB1.00— 0.00% USD/BZD2.00— 0.00% USD/JMD157.69▲ 1.39% USD/TTD6.75▲ 1.58% EUR/BRL6.25▲ 0.93% BRENT 95.84 ▲ 0.02% WTI 88.56 ▼ 0.20% IRON ORE 161.91 — — COPPER 6.09 ▼ 1.50% GOLD 3,886 ▲ 0.03% SILVER 49.12 ▼ 1.70% SOY 1,232 ▲ 0.37% CORN 445.50 ▲ 0.68% WHEAT 593.25 ▲ 1.54% COFFEE 279.25 ▼ 0.34% SUGAR 18.40 ▲ 0.99% ORANGE JUICE 136.85 ▼ 2.91% COTTON 79.02 ▲ 0.44% COCOA 5,123 ▲ 1.13% BEEF 224.80 ▲ 2.70% CATTLE 335.35 ▼ 0.10% LITHIUM 58.76 ▼ 1.13% PETR4 45.30 ▲ 1.34% VALE3 63.50 ▼ 0.70% ITUB4 42.27 ▲ 1.42% BBDC4 14.52 ▲ 1.40% ABEV3 15.79 ▲ 0.25% BBAS3 15.10 ▼ 2.45% B3SA3 14.89 ▲ 0.88% WEGE3 51.31 ▼ 0.66% PRIO3 63.30 — 0.00% SUZB3 54.77 ▼ 2.27% RENT3 30.07 ▲ 1.66% AZZA3 15.91 ▼ 5.86% CSAN3 3.10 ▲ 8.77% RAIZ4 20.00 — 0.00% PCAR3 2.56 ▲ 7.11% GMAT3 4.25 ▲ 10.68% PSSA3 46.41 ▲ 1.02% CVCB3 0.83 ▼ 1.19% POSI3 3.15 ▼ 6.53% SLCE3 18.28 ▼ 0.44% NATU3 5.13 ▼ 3.75% BRKM5 3.02 ▼ 1.63% RANI3 8.18 — 0.00% CSNA3 3.72 ▼ 12.06% IBOV 172,457.76 ▲ 0.66% IPC MEX 71,204.98 ▼ 0.84% MERVAL 2,848,945 — — USD/BRL 5.67 ▲ 0.45% USD/MXN 18.52 ▼ 0.42% USD/CLP 994.16 ▼ 0.13% USD/COP 3,302 ▲ 0.70% USD/PEN 3.40 ▼ 0.16% USD/ARS 1,544 ▼ 0.11% USD/UYU 40.59 ▲ 2.33% USD/PYG 6,196 ▲ 2.33% USD/BOB 11.59 ▼ 0.37% USD/DOP 60.59 ▲ 1.85% USD/CRC 442.74 ▼ 0.10% USD/GTQ 7.64 ▲ 2.06% USD/HNL 26.91 ▲ 2.15% USD/NIO 36.62 ▲ 2.73% USD/VES 909.35 ▼ 0.13% USD/PAB 1.00 — 0.00% USD/BZD 2.00 — 0.00% USD/JMD 157.69 ▲ 1.39% USD/TTD 6.75 ▲ 1.58% EUR/BRL 6.25 ▲ 0.93% BRENT 95.84 ▲ 0.02% WTI 88.56 ▼ 0.20% IRON ORE 161.91 — — COPPER 6.09 ▼ 1.50% GOLD 3,886 ▲ 0.03% SILVER 49.12 ▼ 1.70% SOY 1,232 ▲ 0.37% CORN 445.50 ▲ 0.68% WHEAT 593.25 ▲ 1.54% COFFEE 279.25 ▼ 0.34% SUGAR 18.40 ▲ 0.99% ORANGE JUICE 136.85 ▼ 2.91% COTTON 79.02 ▲ 0.44% COCOA 5,123 ▲ 1.13% BEEF 224.80 ▲ 2.70% CATTLE 335.35 ▼ 0.10% LITHIUM 58.76 ▼ 1.13% PETR4 45.30 ▲ 1.34% VALE3 63.50 ▼ 0.70% ITUB4 42.27 ▲ 1.42% BBDC4 14.52 ▲ 1.40% ABEV3 15.79 ▲ 0.25% BBAS3 15.10 ▼ 2.45% B3SA3 14.89 ▲ 0.88% WEGE3 51.31 ▼ 0.66% PRIO3 63.30 — 0.00% SUZB3 54.77 ▼ 2.27% RENT3 30.07 ▲ 1.66% AZZA3 15.91 ▼ 5.86% CSAN3 3.10 ▲ 8.77% RAIZ4 20.00 — 0.00% PCAR3 2.56 ▲ 7.11% GMAT3 4.25 ▲ 10.68% PSSA3 46.41 ▲ 1.02% CVCB3 0.83 ▼ 1.19% POSI3 3.15 ▼ 6.53% SLCE3 18.28 ▼ 0.44% NATU3 5.13 ▼ 3.75% BRKM5 3.02 ▼ 1.63% RANI3 8.18 — 0.00% CSNA3 3.72 ▼ 12.06%
since 2009
Saturday, November 14, 2026

Brazil Life & Society

Hacked for Five Days, Electronic Ballot Boxes in Brazil Show Only Superficial Flaws

By · · 3 min read

RIO DE JANEIRO, BRAZIL – A group of experts from the Federal Police found two superficial glitches in the electronic ballot box system during the Public Security Test week, reported on Friday, November 28th, the Superior Electoral Court (TSE).

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The Superior Electoral Court hosted 25 academics, students and experts for the Public Security Test.
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According to the court, the flaws detected do not affect the security of the electoral process.

According to the TSE’s Information Technology Secretary, Giuseppe Janino, the experts managed to get into the system that feeds voter and candidate data into the electronic ballot box thereby breaching a security wall.

According to Janino, they also succeeded in changing some words or expressions – such as changing the “ballot paper” to “paper” inscription, for instance – but were unsuccessful in their attempt to change candidate or voter names.

The secretary explained that, for the public testing week, the TSE removes barriers so that researchers are able to advance and uncover vulnerabilities. However, he pointed out that, even so, no serious flaws were detected.

“The ballot box features 30 digital walls. The TSE removes these barriers for the test, provides access to data, algorithms. They can easily move forward. They found vulnerabilities, but there is no risk. Even so, we will work to correct them and strengthen the security of the ballot box,” said the secretary after the results were released.

The public tests began last Monday, November 25th. Twenty-five researchers from different parts of the country, including federal police, academics, students and technology professionals, spent the week looking for vulnerabilities in the system.

It was the fifth time that the TSE conducted these tests; in prior editions, the specialists also found vulnerabilities that were later corrected.

The 25 researchers worked in seven groups and, according to the TSE, were unable to alter the ballot papers; tried to use artificial intelligence to access the system but failed; found no vulnerabilities in the cryptographic keys and libraries (in the last test, vulnerability had been detected); mapped routine algorithms and ballot box patterns, but failed to break privacy or tamper with data; failed to break into the network system; tried to use electric pulses to pick up typing from the ballot box, and thus trace the vote, but could not (in the last test they had spotted a flaw, but the keyboards were shielded).

The two flaws detected by the Federal Police experts were checked by the group that submitted the project to retrieve content from the system, attempting to enter data into the ballot box and extracting data from the tallying of votes.

“This is the fifth time this event has been held, with the aim of improving the electronic voting system and checking whether the resources implemented in the ballot box meet the security requirements. And to correct any vulnerabilities that may be detected,” said Justice Rosa Weber, president of the TSE.

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The group was able to change superficial data but failed to alter candidate or voter names.

According to her, “it’s time to open up the security systems in the eyes of the scientific community, parties, students, it’s a call for them to act as hackers in order to detect flaws in the integrity of the ballot box”. According to Weber, the tests will ensure safe elections in 2020.

The result released on Friday, which found the two vulnerabilities, is only partial. The TSE will submit a final report on December 10th.

TSE experts will work to correct the flaws, and a new round of tests will be conducted next year.

Source: Globo

This article was produced by The Rio Times’ automated AI newsroom. Editorial responsibility: Matthias Camenzind, Publisher and Editor-in-Chief. The Rio Times also runs Ask Rio Times, which answers from 100,000+ of our own articles, the daily Latin America Power Map, and prediction-market odds on elections and markets.. How we use AI · Report an error

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