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The malware was found bundled in an app called “System Update” that had to be installed outside of Google Play, the app store for Android devices. Once installed by the user, the app hides and stealthily exfiltrates data from the victim’s device to the operator’s servers.

Researchers at mobile security firm Zimperium, which discovered the malicious app, said once the victim installs the malicious app, the malware communicates with the operator’s Firebase server, used to remotely control the device.

The spyware can steal messages, contacts, device details, browser bookmarks and search history, record calls and ambient sound from the microphone, and take photos using the phone’s cameras. The malware also tracks the victim’s location, searches for document files and grabs copied data from the device’s clipboard.

The malware hides from the victim and tries to evade capture by reducing how much network data it consumes by uploading thumbnails to the attacker’s servers rather than the full image. The malware also captures the most up-to-date data, including location and photos.

Zimperium CEO Shridhar Mittal said the malware was likely part of a targeted attack.

“It’s easily the most sophisticated we’ve seen,” said Mittal. “I think a lot of time and effort was spent on creating this app. We believe that there are other apps out there like this, and we are trying our very best to find them as soon as possible.”

Tricking someone into installing a malicious app is a simple but effective way to compromise a victim’s device. It’s why Android devices warn users not to install apps from outside of the app store. But many older devices don’t run the latest apps, forcing users to rely on older versions of their apps from bootleg app stores.

Mittal confirmed that the malicious app was never installed on Google Play. When reached, a Google spokesperson would not comment on what steps the company was taking to prevent the malware from entering the Android app store. Google has seen malicious apps slip through its filters before.

This kind of malware has far-reaching access to a victim’s device and comes in a variety of forms and names, but largely does the same thing. In the early days of the internet, remote access trojans, or RATs, let snoops spy on victims through their webcams. Nowadays, child monitoring apps are often repurposed to spy on a person’s spouse, known as stalkerware or spouseware.

Last year, TechCrunch reported on the KidsGuard stalkerware — ostensibly a child monitoring app — that used a similar “system update” to infect victims’ devices.

But the researchers don’t know who made the malware or who it’s targeting.

“We are starting to see an increasing number of RATs on mobile devices. And the level of sophistication seems to be going up, it seems like the bad actors have realized that mobile devices have just as much information on them and are much less protected than the traditional endpoints,” said Mittal.

However, remembering childhood mistakes is beneficial beyond simple reminiscence; it can also help to prepare you for the fact that your own children are liable to go through the same experience. They, too, will eventually be filled with the desire to rebel against your preferences. While all parents want to trust their children, it’s useful to remember your own actions during your teenage years, and how you undoubtedly broke the rules a few times too – because this memory can encourage a healthy level of skepticism that allows you to actively monitor your child’s choices.

Unfortunately, parental skepticism is needed now more than ever. The advent of the technological age has meant that child rule-breaking can now be more catastrophic than it was for earlier generations; breaking technology-based rules could create serious consequences that negatively impact your child for years to come. However, children will still be infused with the desire to break the rules – an issue that can cause no end of worry for parents, especially if your children are more tech-savvy than you are personally.

There is one particular area where parental skepticism can be hugely beneficial; the risks posed by hidden Android apps. Below, we’re going to explore this subject further and explain how kids can overcome tech obstacles set in place by their parents in order to download rule-breaking apps or content that they know their parents would prefer they did not have.

The apps that are visible in the app menu screens on a device are not necessarily the only apps that are actually installed on the device. Additionally, hidden content is exactly as it sounds; files and downloads that are intentionally hidden from the view of a casual observer. We will give you some tips on finding hidden apps as you read on, but first, we’ll explain a little more about them.

There are a number of different methods that children can use to hide apps from parental supervision, ranging from activating settings within the Android system to installing third-party apps designed for the express purpose of concealing content.

You can check the full list of apps downloaded onto an Android device by navigating through the following options:

This will show the current list of installed apps, including those that have been hidden from immediate view. Scan through the list and check to see if you are happy with the apps that are installed; you may also need to tap on the application itself to open and then tap “Enable” on the app’s detail screen. If there are any you are unfamiliar with, quickly Google to ascertain if they are suitable for your child. If they’re not, you can uninstall them then and there, and then plan to speak to your child about the matter at a later point.

Additionally, be aware of the names of the most common “privacy” apps. If you scan through your child’s device and see that apps such as App Defender, Privacy Manager, Privacy Master, or AppLock have been installed, be concerned. Ask your child why they have downloaded a privacy app and what they use it for; there may be an innocent explanation, but you definitely need to discuss the subject further.

To search for hidden content, you’ll need to go through the following steps:

A two-pronged approach is usually preferable:

It would be nice to think that children can be trusted to stay within their parents’ rules but, as most parents can remember from their own youth, this often isn’t the case. By discussing hidden apps and content with your children and then double-checking that your rules are being followed, you can be confident that your children’s devices will only contain apps and content that meet your standards. Essentially, you can be open with your child in order to establish a sense of trust, but avoid being too trusting – a perfect balance that preserves your child’s well-being at all times.