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Protecting your smart TV and set-top box from being hacked | Kaspersky official blog

14 September 2026 at 17:59

In 2026, the owner of an ordinary home router, smart TV, or TV box is a prime target for cybercriminals. These devices are readily recruited into botnets and residential proxy networks, which we’ve covered before.

Criminals “sublease” the infected device by letting outsiders pay to visit any website from the victim’s IP address, so it looks like the device’s owner is doing it. The service is in demand across all kinds of shady schemes: from ad fraud and spam campaigns to password bruteforcing and account hacking. In our previous post, we described how home routers get recruited into these proxy networks; today we take a look at an even more vulnerable, and equally ubiquitous category of devices: smart TVs and TV boxes.

These appeal to criminals for two reasons. First, unlike computers and smartphones, TVs are almost always plugged into the power and have a fast internet connection. A dark screen doesn’t mean the device is switched off. On top of that, the limited user interface and monitoring tools mean suspicious background processes can easily slip unnoticed past users.

The threat is evolving and growing more aggressive. A recent study found that once proxyware turns up on a set-top box, the risks to its owner go well beyond having their traffic siphoned off.

Anatomy of the infection

The researchers focused on a popular TV box by SuperBox, which we already covered earlier in the post Is your TV box renting out your network?

SuperBox’s marketing leans heavily on the promise of providing thousands of TV channels, with no subscription or monthly fees. But out of the box, the device can’t actually do anything of the sort. To get access to pirated content, you need to install the brand’s proprietary app store.

When you launch it and install additional apps, the thousands of TV channels do appear. Meanwhile behind the scenes, with no warnings or permission prompts, the device floods external sites with unauthorized requests, and network traffic spikes sharply.

The researchers uncovered several alarming facts. First, the victim gets enrolled into as many as five botnets at once. The SuperBox runs clients for several proxyware networks simultaneously, which even try to compete with one another by blocking rival software from being installed.

But the real shock was the attacks on the internal network. The TV box’s proxyware places no limits on what its paying clients can actually do on the network. They can reach not only external sites but also devices inside your home network.

Normally, your home router and ISP settings protect you from outside attacks. But proxyware bypasses these barriers because it operates from inside the network. During an experiment, the researchers confirmed that an attacker on the internet can easily leverage the infected set-top box to open the admin panel of a home router, such as a Linksys, which is supposed to be accessible only to its owner when connected to the home Wi-Fi network. This means hackers can try to steal data from other devices in the same household, or even encrypt home network storage (NAS).

At the same time, flaws in SuperBox’s factory firmware let hackers remotely install and run any application with superuser privileges, and the threat is anything but hypothetical. Over three weeks of monitoring, the test set-top box was hit by more than 1300 attacks through the home proxy network. Attackers installed three different types of malware, including a module for launching DDoS attacks.

The malware uses several methods to gain a foothold in the system, and it survives reboots and power failures alike.

How to tell if your set-top box is working for hackers

If you have a cheap TV set-top box or Android TV from a little-known brand, it’s worth checking it for anomalies.

The most reliable method is to review the network traffic. Use the statistics in your router’s control panel, but note that some budget models may lack this feature. This feature is called Traffic Analyzer on Asus routers, Traffic Usage on TP-Link, and Traffic Monitor on Keenetic. Find your TV or set-top box in the device list and check the ratio of downloaded to uploaded data. They should consume a lot of traffic to download video while sending very little. If your box is quietly pushing gigabytes of data out or staying chatty on the network even while idle, that’s a telltale sign it’s infected.

If traffic statistics aren’t available, look for indirect signs:

  • The network and memory activity LEDs won’t stop blinking even though no one’s using the device.
  • The set-top box’s casing is constantly warm or hot.
  • The interface lags behind the remote, and the box freezes at random moments that have nothing to do with heavy video playback.
  • Your other devices (computers or phones) are seeing a real drop in internet speed.
  • When trying to visit familiar sites over your home Wi-Fi, you’re constantly hit with a CAPTCHA — a sign your network may be compromised and flagged as a spam source.
  • Your ISP’s tech support calls you asking about suspicious network loads.

What to do with an infected device

The best solution is to disconnect the device from the internet and dispose of it. If you have to keep using it, follow these steps to minimize the risks:

  1. Do a factory (hard) reset. Restore the set-top box to its original state.
  2. Take it offline before setting up again. The first time you turn it on after a reset, skip the Wi-Fi setup step and don’t plug in the Ethernet cable.
  3. Block app installation. Go to Android settings and disable installation of apps from unknown sources. Be sure to turn off any debugging features if enabled: USB debugging, Wireless debugging, and ADB. Menu item names may differ depending on your Android version and device manufacturer.
  4. Isolate it on the network. Set up a guest Wi-Fi network on your router and connect the TV box to it. Enable Client Isolation in your router’s settings, if it has it. This will stop the box from seeing other devices on your home network, which protects your computers and network storage.
  5. Check for updates. Once the box is connected to the guest network, check for official firmware updates: manufacturers sometimes patch known vulnerabilities, though with lesser-known brands, you shouldn’t count on it.

Your most reliable safeguards

Buying cheap devices with pirate streaming features and installing software from shady sources is a surefire way to compromise your home network. Your IP address will become a source of malicious activity, which at best gets you blocked by your ISP and at worst puts you on law enforcement’s radar. What’s more, hackers can use the box as a launchpad to attack your home computers and NAS, which can lead to personal data theft or a ransomware attack.

The best protection is to buy devices from trusted brands and pay for legal content. And to rule out someone hijacking control of your network, make sure your router’s admin panel and other home devices are protected with unique, strong passwords. To avoid having to remember them all, use a reliable password manager such as Kaspersky Password Manager. Additionally, the Smart Home Monitor feature included in Kaspersky Premium lets you keep all your devices fully under control.

There may be more things you don’t know about your smart home devices:

This Android malware steals banking credentials even without an internet connection | Kaspersky official blog

31 August 2026 at 19:18

Cybersecurity researchers have discovered a new family of Android malware, and it goes by the name of Manic. It lets criminals spy on their victims, steal banking credentials, and take remote control of infected devices.

But its most unusual trick is this: Manic can send stolen data back to attackers even when the given device has no internet connection. Apparently, random mobile internet outages seem to get in cybercriminals’ way just as much as anyone else’s, so the actors behind Manic came up with an unusual workaround.

People across a wide range of European countries are at risk, from Russia to the United Kingdom. In this post, we walk through what this Trojan can actually do, how it smuggles stolen data out to attackers, and how you can protect your Android device from Manic and other similar threats.

How Manic spreads, and who’s at risk

Researchers haven’t yet pinned down exactly how attackers are getting Manic onto people’s devices. Typically, malware like this spreads through channels like:

  • Infected apps on legitimate app stores
  • Malicious APK files shared on pirate websites
  • Download links sent through messaging apps and email
  • Scam sites

Google has told journalists it hasn’t found any trace of Manic spreading through apps on the Google Play Store. That suggests people are most likely installing infected apps from unofficial sources.

Experts have traced the beginnings of the attackers’ infrastructure for this campaign to February 2026. The earliest samples of the malware itself turned up in late May of this year. Since then, the criminals behind the Trojan have refined the ways it hides from detection on a victim’s device.

Manic currently combines the powers of a banking Trojan, spyware, and a remote-access tool that lets an attacker control the device. Attackers are especially interested in data from sources like:

  • Banking apps and payment services
  • Official government apps
  • Crypto wallets and cryptocurrency exchanges
  • Two-factor authentication apps
  • Text messages and notifications: mainly the one-time codes used to verify logins or approve transactions

By looking at which banking apps Manic targets, researchers have been able to work out which countries it has in its sights. It turns out its reach is broad, covering Austria, the Czech Republic, Estonia, France, Germany, Lithuania, the Netherlands, Poland, Russia, Slovakia, Spain, Ukraine, and the United Kingdom.

Stolen passwords, intercepted codes, remote control: what Manic can actually do

Let’s look at exactly what information Manic steals, and how it manages to get it. The malware’s main trick relies on abusing Android’s Accessibility services, a set of built-in features designed to help users with visual impairments. Used as intended, these features are genuinely helpful for people with vision loss. But criminals have long been quietly exploiting the very same tools for their own purposes.

Once a user grants an app permission to use Accessibility services, that app can “see” the text and buttons on the screen, interact with them, scroll through pages, and carry out actions automatically — all as if a user were doing it themselves. Attackers use this to read messages on screen, quietly grant the malware extra permissions, interfere with attempts to uninstall it, switch off security protections, or control other apps without the victim ever noticing.

With Manic, this abuse of Accessibility services is paired with the Trojan’s own advanced capabilities. It can generate an invisible keyboard that overlays the phone’s real one. When a user types their password to log in to a banking app, Manic records exactly which keys they pressed. Then it uses Accessibility services to instantly replay that same keystroke on the actual app keyboard.

Manic generates a transparent capture layer that covers the phone's keyboard

Manic generates a transparent capture layer that covers the phone’s keyboard, recording each tap and relaying it to the real keyboard. Source

This means attackers don’t have to build a fake login screen for every single app they want to target. Because Manic works as an invisible layer sitting on top of the genuine app, everything looks and behaves as usual, so a phone owner has no reason to suspect they’re handing over their PIN or password to a criminal.

Manic doesn’t simply log everything a user types, either. It automatically recognizes what kind of information it has just captured and sorts it into categories: passwords, email logins, four-to-six-digit SMS codes, strings of characters that look like crypto wallet seed phrases, and phone unlock codes or pattern locks. Alongside the captured text itself, Manic also records which app it came from, when it was entered, whether the user typed it manually or used autofill, and whether that app is on its hit list.

Manic’s abilities don’t stop at collecting information. Using Accessibility services once again, it also lets attackers take remote control of an infected device. To conceal this activity, Manic can show a black screen or fake a system update.

On top of Accessibility services, the malware also asks for permission to read text messages and notifications. That lets attackers intercept two-factor authentication codes and one-time verification codes before a victim even has a chance to type them into the app.

Put together, this hands attackers not just passwords, banking credentials, and verification codes, but the ability to remotely control the victim’s phone as well.

Even being offline won’t save you from data theft

Manic’s original method for relaying stolen data off the device and back to the attackers deserves a separate mention. Even today, devices get knocked offline more often than people might expect, and Manic’s creators built a workaround specifically for such situations.

Normally, malware like this collects information on the device and sends it straight to a server controlled by the attackers. But what happens when the infected device has no direct internet access, or can’t reach the command-and-control server for some other reason?

In that case, Manic simply stores the stolen data on the device and starts scanning nearby for other infected phones it can reach over Wi-Fi or Bluetooth. If it finds one with internet access, it hands over the encrypted data to that phone, which then forwards it on to the attackers’ server.

But it doesn’t stop there. Data can hop across a chain of infected devices. By default, Manic allows up to four of these relay devices in the chain. If no suitable device is nearby, the data simply stays on the original phone, and Manic tries again later.

How to protect your phone from Manic and other banking Trojans

Android malware keeps getting more sophisticated. That makes it worth remembering — and actually following — a few basic digital hygiene habits for Android phone and tablet users:

  • Avoid installing apps from unofficial sources.
  • Don’t grant apps permission to use Accessibility services unless this is absolutely necessary and you understand exactly why they need it.
  • Install reliable security software on all your devices, run scans regularly, and take its warnings and recommendations seriously. We recommend Kaspersky for Android. Our Android security apps are temporarily unavailable on the Google Play Store, so to install them on an Android device we recommend using an alternative app store or installing the APK file manually from our website. A full step-by-step guide is available in our post, How to install or update Kaspersky apps for Android in 2026.

Malware doesn’t just target smartphones; it feels at home on other Android-powered devices too — from streaming boxes to… cars. Check out the details in our related posts:

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