Somewhere between the comfort of a well-chosen recommendation and the unease of being watched, a long-running question about our living rooms has resurfaced. A reverse engineer working under the handle log4j claims to have found, deep inside a 2025 Samsung smart TV's Tizen software, components that categorize audio, recognize screen content, and run a neural network that appears to study viewing habits for ad targeting. The claims are unverified, and the one physical test so far, though it recorded a brief microphone activation, was too compromised to settle anything. The episode matters less
Researcher Claims Samsung Smart TVs Monitor Audio and Viewing Habits; Findings Remain Unverified
Detecting a microphone is not the same as using one
Mark
So what is actually being claimed here?
Mimi
That Samsung's 2025 TVs, through the Tizen software, categorize audio, recognize what's on screen, and run a neural network on the set that profiles viewing habits for ad targeting.
Mark
What set the researcher off?
Mimi
Ads that seemed oddly personal. Then came the work of cracking the firmware, which was AES-encrypted, by exploiting unknown vulnerabilities to get root.
Luke
Let's be clear on status. Everything about the TV's internals is the researcher's account so far. No write-up, no reproducible tests.
Mark
The microphone point seems like the scary one.
Mimi
It is. The claim is that Tizen can detect microphones on connected soundbars or Bluetooth devices, even if the TV has none built in.
Luke
But detecting a microphone isn't using it. The reporting says that outright, and nothing shown so far demonstrates unauthorized access.
Mark
What about the Flipper Zero test?
Mimi
Nguyen saw the mic turn on for about five seconds, then nothing. He called it inconclusive.
Luke
And his TV was already rooted with settings disabled, so it can't stand in for a normal set. It doesn't confirm or refute anything.
Mark
And Samsung's own features?
Mimi
Pet Care and Family Care use microphones openly, and ACR collects viewing data with consent, which Samsung says can be disabled. The Texas agreement in February 2026 made consent explicit there.
Luke
Also unknown: why OpenAI suspended the researcher's account. Only one side has spoken.
El Pulso
- A researcher's suspicion that a Samsung TV was serving oddly precise ads has grown into claims of audio monitoring and on-device profiling.
- Firmware encryption blocked the first attempt, so the investigator reportedly used previously unknown vulnerabilities to gain root access to the set.
- The alleged microphone capability works through connected soundbars and Bluetooth devices, raising the chilling possibility of collection without any built-in mic.
- A Flipper Zero test caught a five-second microphone activation, but because the TV was already rooted, the result stands as inconclusive.
- Attention now turns to a promised technical write-up and reproducible testing, while Samsung's 2026 Texas consent agreement keeps regulatory scrutiny close.
Somewhere between the comfort of a well-chosen recommendation and the unease of being watched, a long-running question about our living rooms has resurfaced. A reverse engineer working under the handle log4j claims to have found, deep inside a 2025 Samsung smart TV's Tizen software, components that categorize audio, recognize screen content, and run a neural network that appears to study viewing habits for ad targeting. The claims are unverified, and the one physical test so far, though it recorded a brief microphone activation, was too compromised to settle anything. The episode matters less as a verdict than as a reminder of how much of our domestic life now passes through software we cannot fully inspect, and how hard it is to tell a feature from a surveillance.
It began with an advertisement that seemed to know too much. A cybersecurity researcher and reverse engineer known as log4j on X had noticed unusually personal ads appearing on a Samsung smart TV bought in 2025, and set out to learn why. The explanation, they now claim, lies inside the set's Tizen operating system.
The path was not easy. The firmware was guarded by AES encryption, so the researcher reportedly exploited previously unknown vulnerabilities to gain root access and open the software for inspection. What they describe, as reported by Tom's Hardware and carried by Wccftech, is a wide range of monitoring capabilities: audio categorization, screen-content recognition, network mapping, location-related services, and cross-device advertising identifiers. The most striking claim is a region-specific convolutional neural network allegedly running on the TV, analyzing which videos a viewer watches, how far they get, and which ads they skip. The researcher also suggests this background work may explain the sluggishness many smart TVs show, though no performance data has been offered.
The sharpest allegation concerns sets without a built-in microphone. The researcher says Tizen can still detect microphones reachable through soundbars or Bluetooth peripherals, which in theory could enable audio collection. None of this is independently verified, and detecting that a microphone exists is not the same as using it without permission. A separate test by Xuan-Son Nguyen, a Hugging Face engineer, recorded a microphone activation of about five seconds with a Flipper Zero, but Nguyen himself called it inconclusive because the TV was already rooted and settings had been changed.
Some of what sounds alarming overlaps with features Samsung openly sells. Pet Care and Family Care use microphones to recognize barking dogs and crying babies, and its Automatic Content Recognition can identify on-screen content and collect viewing history, which Samsung says requires consent and can be disabled. Regulators have already engaged with this territory: in February 2026 Samsung agreed with the Texas Attorney General to obtain explicit consent before collecting ACR viewing data from Texas consumers.
The investigation has also produced a side dispute. The researcher says their OpenAI account was suspended for alleged "Cyber Abuse" after using its tools during the firmware work, and argues the analysis was legitimate local research. OpenAI has not publicly explained the decision.
For now, the findings remain preliminary. A full technical write-up is reportedly in preparation, and until it arrives with reproducible testing, the presence of monitoring code should not be taken as proof of covert recording or unauthorized transmission. The question to watch is whether others can reproduce what it describes.
It started with an ad that felt too well aimed. A cybersecurity researcher and reverse engineer who goes by log4j on X noticed unusually personalized advertisements on a Samsung smart TV bought in 2025, and decided to find out why. The answer, the researcher now claims, lies deep inside the set's Tizen operating system.
Getting there was not simple. The firmware was protected by AES encryption, which blocked a straightforward reverse-engineering effort. The researcher responded by exploiting previously unknown vulnerabilities to gain root access to the television, opening up the software for inspection.
According to Tom's Hardware, which the Wccftech report draws on, what turned up was a broad set of monitoring capabilities: audio categorization, screen-content recognition, network mapping, location-related services, and cross-device advertising identifiers. The most striking claim is that a region-specific convolutional neural network runs on the TV itself, allegedly analyzing which videos a person watches, how far they get through them, and which advertisements they skip. The researcher also speculates that all this background processing may help explain why smart TVs so often feel sluggish, though no performance measurements have been offered to back that up.
Another allegation draws the most attention. For Samsung sets with no built-in microphone, the researcher says Tizen can still identify microphones reachable through connected devices, such as soundbars and Bluetooth peripherals. In theory, that could allow audio collection without a microphone in the television itself.
None of this has been independently verified, and the distinction matters: detecting that a microphone is available is not the same as accessing it without permission. A separate test adds only ambiguity. Xuan-Son Nguyen, a Hugging Face engineer known as ngxson on X, used a Flipper Zero to watch a television and saw it activate its microphone for roughly five seconds, then stop, with nothing further during later monitoring. Nguyen himself called the result inconclusive, noting the TV had already been rooted and several settings were switched off.
Some of what sounds alarming also overlaps with features Samsung openly sells. Its Pet Care and Family Care functions use microphones to recognize sounds like barking dogs and crying babies. Its Automatic Content Recognition technology can identify what is on screen and collect viewing-history information, though Samsung maintains the feature requires user consent and can be turned off.
Regulators have already looked at this territory. In February 2026, Samsung reached an agreement with the Texas Attorney General requiring explicit consumer consent before collecting or processing ACR viewing data from Texas consumers.
The investigation also produced a side dispute. The researcher says their OpenAI account was suspended for alleged "Cyber Abuse" after using its tools during the firmware analysis, and contests the action, saying the work was legitimate local analysis rather than malicious exploitation. OpenAI has not publicly explained the circumstances.
For now the findings are preliminary. A full technical write-up is reportedly in preparation, and until it appears with reproducible testing, the presence of monitoring-related code should not be read as proof of covert recording or unauthorized data transmission. What to watch is that write-up, and whether anyone else can reproduce what it describes.
Citas Notables
His Flipper Zero test was inconclusive because the TV was already rooted and several settings were disabled.— Xuan-Son Nguyen (ngxson), Hugging Face engineer, paraphrased
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