Mobile phones have long replaced computers in the device market, while the problems of the “big brother”, alas, have remained in force. The fact is that virus creators are closely watching Android smartphones and tablets, and the amount of malware for the mobile platform raises reasonable concerns.
The most dangerous mobile viruses
There are many types of malware, and they vary in degree of risk:
- Viruses, trojans and worms, having settled on mobile smartphones and tablets, delete files, encrypt data, transfer files to the Internet without the user's knowledge;
- Spyware, incl. keyloggers record user actions and pass them on to attackers. The main danger is the leakage of confidential data (passwords, account numbers, photos and videos from the camera)
- Popup ads are annoying banners that cannot be disabled. These viruses do not pose a big threat, however, they significantly worsen the user experience and slow down the work with the mobile device.
In general, the task of any malware is to attack the target device by finding a vulnerability, a hole in the system. Viruses not only damage files, but also steal confidential information. The most harmful viruses block access to the smartphone's operating system and extort money for an unlock password.
Checking if there is a virus on my phone
If the phone behaves strangely, this is a cause for concern. Check the checklist one by one to see if you experience similar symptoms on your smartphone.
1. Intrusive advertising (adware) pops up
If you did not install any paid applications, but banners and popup windows began to appear on their own, this may be evidence of a virus infection.
Some adware viruses (for example, Adware.MobiDash) display windows with links on the screen. By clicking on the URL, you go to an unsafe site, from where the apk file is downloaded, after which the mobile device becomes infected.
2. Significantly increased the volume of Internet traffic
Many mobile viruses actively use the Internet to transfer data, which leads to an increase in traffic consumption. Therefore, we advise you to check the statistics as soon as possible through the Android settings: "Settings" - "Connections" - "Data usage" - "Mobile traffic".
If you notice a significant difference compared to your Internet activity, this is a signal that malware is active on your smartphone.
In addition to damage to the operating system and user data, all this can lead to increased financial costs, especially if your carrier's rates "bite".
3. Unauthorized Internet access
In addition to consuming traffic, viruses without millet connect to wi-fi, a mobile network, changing phone settings at their discretion. While you're kicking yourself for forgetting to turn off your mobile data roaming once again, the virus will harm your phone at your own expense.
4. Increased subscription fee for mobile calls and SMS
Viruses have learned to call and send SMS on behalf of the user. Order a detail (printout) of calls from a mobile operator. Check if all the numbers are familiar to you. Also check the text of outgoing text messages/sms.
5. Battery drains quickly
Viruses that carry on their activities, like other programs, actively consume battery capacity. If the battery consumption has increased and the battery runs out quickly, this is a sign of a virus infection.
Check apps that are consuming battery: Settings - Optimization - Battery. Data for each application and process is available here.
At the same time, you do not always track the activity of viruses through battery statistics: especially cunning representatives cover their tracks and disguise themselves.
6. Brakes and glitches
As already mentioned, worms, viruses, keyloggers do not hesitate to use phone resources. Virus writers don't bother to optimize their programs. Therefore, a small virus can slow down the mobile OS and individual applications by several times.
More frequent glitches can also be a sign of infection: applications close by themselves, do not open the first time, or do not start at all.
7. The appearance of unwanted applications
Viruses are camouflaged and infiltrated into other applications. If you downloaded software not from the official Google Play store, there is a risk of installing malware in addition, which is sometimes difficult or impossible to remove without doing a hard reset.
How to protect yourself from viruses: simple rules
You must follow basic security rules to prevent your phone from getting infected. This is easy to do, just follow the rules listed below.
1. A good effective antivirus or firewall does not fit.
Check your mobile phone for viruses regularly. It is not necessary that applications work constantly and load device resources - you can conduct a comprehensive anti-virus scan several times a month and, in addition, use online anti-viruses.
4. Perform a factory reset, making a backup copy of the files you need. Note that most often this is the fastest and safest way to get rid of viruses.
Conclusion
Don't be paranoid about virus threats. The main thing is to monitor the security of the mobile device. The first step is to check if there are viruses on the phone, right now.
We hope you have taken basic measures to protect against viruses and your smartphone is no longer in danger. If all else fails and they infiltrated your mobile device, write to us. Describe the symptoms in detail and we will suggest what can be done to get rid of malware.
While a virus on Android devices is relatively rare, but still some malicious applications sometimes find their way to the Google Play Market, but such applications are quickly blocked. It's worth remembering that apps on third-party sites are much more likely to be more dangerous to your device because Google can't verify them. At best, malicious applications will affect your phone's performance, at worst, your personal data such as passwords or payment information, photos, correspondence can be exposed. How to smoke a virus on Android and remove it, read on.
Note: The information below should apply regardless of your phone manufacturer: Samsung, Google, Huawei, Xiaomi, etc.
Generally, if your phone has a virus, it will start behaving strangely. The device may suddenly become very slow and you will notice an unusual amount of internet traffic. Worse, you may find unauthorized in-app purchases. If you have a virus on your phone, you probably won't see a pop-up alerting you to something that's happening or offering help.
Important: There are ads floating all over the internet that look like error messages and will prompt you to click and download something to fix your phone. Don't fall for this as it is a scam that will take you to a malicious website or app and cause the very problem you thought you were solving.
Do you have an iPhone? Touchscreen not working? Stripes on the screen? Are certain areas of the touchscreen not working? The touch does not work intermittently?
How to get rid of a virus on the phone?
The first thing to do to remove the virus is to restart your smartphone in safe mode. Depending on the version of Android your smartphone is running, you will need to do one of two things to start the system in safe mode with the working apps loaded from the factory.
- First, hold down the Power button on your smartphone
- Confirm the action in the pop-up window. The phone will reboot and go into safe mode.
- Once you are in safe mode, open:
- Settings
- Applications
- Downloads.
- Go through the list of apps that you don't remember or that look suspicious. Find the apps you would like to uninstall and then uninstall them.
Note: if the button Delete is inactive, it means that you may have unknowingly given administrator access to the application. Find out by going to Settings > Security > admin apps devices. Move the switch to position Off for all apps that shouldn't have access, then tap deactivate on the next screen. Then you will be able to uninstall those applications.
Exiting safe mode is easy. Just restart your phone by holding the power button and press Reload.
Still, if nothing has changed after uninstalling questionable apps, you can perform a factory reset, but you will have to re-download most of your apps and you will lose any data that was not saved to the cloud or sd card.
Go to Settings => System => Reset Options => Erase all data(reset to factory settings). Depending on your version of Android, the option factory reset maybe in the backup section and Reset => Factory data reset and reset the phone. You may need to enter a password to complete the process.
How to avoid virus infection on Android?
There are several ways to avoid getting a virus on your Android device.
- Make sure your phone is up to date: The latest security update is displayed under Security in Settings.
- Google Play Protection: Scans your phone regularly for malware, and should be enabled by default if your phone is active. Check it out:
- Settings
- Security
- Google Play Protection.
Did your phone catch a virus through an MMS message sent to you? What to do?
- If the radio button next to the item scan your device for security threats off, turn it on. Also, you will see if there are any harmful apps on your phone. If not, he will say, “looks good.”
- Avoid installing apps outside the Google Play store:
On phones running Android 7.0 and earlier, you can easily download non-Google Play Market apps by going to Settings => Security => Unknown sources and checking the box next to it.
For Android 8.0 and above, this option is no longer available, and downloading non-Google Play apps is more difficult. You will need to download the APK file; by opening it, you will install an application in which, instead of the application you need, a virus can be installed, or the application itself with a virus sewn into it.
- Avoid app clones: Watch out for app clones that resemble the original apps, but with a different developer's name. Sometimes these clones are just trying to earn ad revenue. In any case, before downloading any application, be sure to check its creator.
- Use Android virus scan apps: For added security, consider downloading an additional antivirus app in case anything slips through Google Play Protect. There are many free antivirus apps for Android from leading security companies.
Conclusion.
Use anti-virus programs to avoid infecting your mobile phone. Use trusted app manufacturers from the Play Market. Do not open MMS messages from unknown senders. Good luck!
If you have a virus on your smartphone or tablet, the good news is that it is easy to remove. We will tell you how to remove a virus from Android. In addition, we will show you how to avoid Godless, Gunpoder, Mazar and other malware on Android.
Data reset
Viruses are installed on a smartphone through third-party applications; to remove them, start the gadget in safe mode, remove the administrator status if necessary, and then delete the infected application. If this method does not solve the problem, a full data reset will destroy the defective application and restore the device to factory settings. At the same time, all applications that you installed are deleted, all accounts are also deactivated. That is, you get a "virgin" device out of the box.
In this article, we provide a step-by-step guide on how to remove malware from an Android smartphone or tablet.
To begin with, we note that the probability of an Android device being infected with a virus is very small. It is more likely to see a message that convinces you that your gadget is infected, and assures you of the need to download a really malicious application, or pop-up windows, or the device simply does not work correctly. However, viruses on Android devices are still found.
If you are convinced that your smartphone has a virus, read on for how to destroy it.
How to avoid viruses on Android or know the enemy in person
How to avoid viruses on Android, including viruses like Godless, Gunpoder and Mazar.
All Android viruses enter the device along with installed applications, so if your smartphone or tablet does not yet have a virus, the best way to prevent it from appearing is to be very careful with the applications you install. Rule of thumb - if you don't know what the software is, don't download it outside of the official Google Play app store. By default, the smartphone or tablet is configured to prevent this installation.
A similar tactic fits the Gunpoder virus, which made headlines after Palo Alto Networks discovered it could infiltrate a smartphone through Nintendo game emulators installed outside of Google Play, and could even force you to pay for extras.
More recently, the Mazar virus has appeared, penetrating a smartphone through a link in a text message that downloads the Tor browser. Right now, it only seems to infect devices in Denmark, although it has the potential to spread further.
It is worrying that the latest malware for Android is in the form of an application - the Godless virus can be installed through applications from Google Play. They tend to look like legitimate up-and-coming apps like game copies and a flashlight app (Summer Flashlight is one such app), but from unknown developers. Trend Micro also found several third-party copies of clean apps from Google Play on the Internet that included malicious code.
Godless only affects Android Lollipop devices and has the ability to take full control of the smartphone and install other (potentially dangerous) software. The advice of the company's security department is to ensure that you have administrator rights, as well as permission to install or not install the application from Google Play.
If you are not sure, then do not install applications from unofficial sources
To make sure you don't accidentally install malware by installing apps outside of Google Play, open the Settings menu, look for the Security option, and then deactivate Unknown Sources (prohibit installing apps from unknown sources).
If you do decide to install an app outside of Google Play, do your research. Check permissions (does the player need to have access to your contacts?), look at the reviews, and visit the developer's website to see their other programs. In the case of Gunpoder, be especially wary of Nintendo game emulators.
You can use one of the many free antivirus apps for Android, such as 360 Mobile Security, Avast, and Lookout. They are able to detect and remove malicious applications. All of them scan the contents of the smartphone for anything suspicious, but be aware that applications can give false signals. For example, flagging an app you've been using for several months as malware when you know it's safe. In most cases, such warnings can simply be ignored. Also, again when dealing with Gunpoder, these antiviruses may not notice malicious behavior if the application is able to hide it from them - Gunpoder uses the AirPush library to hide its behavior.
If you think that there is still a virus on your smartphone or tablet that resists your attempts to uninstall the associated application, a factory reset will remove it and return the device to its original state. But carrying out such manipulation means that all data on the smartphone that is not saved in the backup will be lost. Instead, to get rid of the virus, follow these steps.
How to clean Android from a virus
Step 1
Start your gadget in safe mode. It is impossible to launch any applications from third parties, this also includes malicious programs. On most devices, to access the power on options, you must press and hold the power key until you are given the option to reboot in safe mode. If this does not work for you, then Google "How to run [model name] in safe mode" and follow the instructions. If everything is done correctly, "Safe Mode" will appear in the lower left corner of the screen. 
Step 2
Open the "Settings" menu and click on "Applications", check that the "Downloaded" tab has opened. 
If you don't know the name of the virus that infected your smartphone or tablet, go through the list and look for something that looks suspicious or that you did not install or should not be present on the device.
Step 3
Click on the malicious app to open its information, and then click Uninstall or Uninstall Updates. 
Basically, this is quite enough to remove the virus, but sometimes it turns out that the "Delete" button is inactive. This happened because the virus made itself the device administrator status.
Leave the "Programs" menu and click successively on "Settings", "Security", "Device Administrators". Or go to settings and use the search at the very top. Enter "Device Administrators" there. You will see a list of all programs on your device with administrator status. Uncheck the program you want to remove, in the window that appears, click "Deactivate". After that, go back to the Applications menu and uninstall it.
Now that the virus has been removed from your Android smartphone or tablet, restart your device to get it out of safe mode. If everything is working well, it's time to back up your saved data and install an antivirus application to protect yourself from viruses that may knock on you in the future.
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Android can be infected by viruses that display ads in different places and try to install additional applications on your own. Some viruses of this type are easily removed, but you may encounter some that are resistant in different ways. Let's see how to remove intrusive trojans and other pests from Android.
Android is a system like any other, and unfortunately, it can happen that some app from the Play Store gets infected. After installing such an application, the virus will enter the phone, the action of which may be different - it may display advertisements for other applications, it may try to install additional applications on your phone, and in serious cases it may try to steal our data.
We have already considered this problem in the context of removing the Ransomware virus, which encrypts our phone with a password and makes it impossible to use it. However, how to deal with other viruses that show intrusive and sometimes even obscene ads, or try to install garbage on your phone? An example can be seen below - the phone was infected with a virus that displays ads on other applications (for example, while talking on Messengerer), and also tries to install games of unknown origin.
Method #1 - Use a Good 360 Security Antivirus (No Root)
If we do not have ROOT in the phone, i.e. administrative rights, then our options are limited. However, in the Play Store we can find many applications that cope with the removal of slightly lighter viruses. A good antivirus has to do this job, detect the virus, and even if it cannot completely remove it, it will completely block its work and freeze its activity.
Download 360 Security
One of the antivirus apps we recommend based on our experience is 360 Security. It is a pack of useful tools to clean Android, uninstall unwanted apps and remove viruses. From the above link, you can download it directly from the Play Store.
After installing the application, you must launch it and then enter the tab "Antivirus" by selecting it from the top toolbar. Then start scanning your phone. The antivirus should detect the pests and then try to remove them. If it finds a virus, it will be flagged as malware that causes malicious activity.
In the case of more severe viruses that cannot be removed because they are installed as a system application on the phone, 360 Security will offer an alternative solution - it will display a series of actions that must be performed to disable such a virus and block its operation.
If 360 Security fails to deal with this problem, we can use alternative antiviruses such as Avast Mobile Security, AVG Antivirus Free, ESET Mobile Security antivirus or Malwarebytes Anti-Malware.
Method #2 - Try to uninstall the malicious app in safe mode
Android has an emergency mode that, when activated, will wake up the phone without any additional apps. Only the main functions of the system will be downloaded, and all applications downloaded from outside or installed from the Play Store will be deactivated. We can try to remove a malicious application in this way if we know what caused it (and if we don't know, it can simply be found by subtraction).
First of all, you must enable emergency mode. Here the case looks different because each phone manufacturer can introduce their own modifications to the system, so starting the device in safe mode may look different in each model.
Most often, emergency mode can be activated through the power menu. Hold down the power button for a while until a small window with power options appears - usually you can turn off the device, restart or turn on airplane mode. Select the option to disable the device from the menu and hold your finger on it - after a while you will see a message asking if you want to start the phone in safe mode.
Confirm it. If this method does not work, it means that the device manufacturer has changed the way the emergency mode starts and you need to search the web for information on how to enable it on your model.
After restarting the device in emergency mode, go to "Settings > Applications" and go to the tab with downloaded applications. Look for any apps in this location that you know you didn't install yourself. Select them in the list and just remove them from your phone and then restart your phone normally.
You can find more information about this method in our separate guide on How to Remove Malicious Android Apps in Safe Mode.
Method #3 - Remove Heavy Viruses Using Stubborn Trojan Killer (ROOT)
Sometimes we can find extremely stubborn viruses that install themselves as system applications, and if they can be detected and blocked by traditional methods, they cannot be removed. Stubborn Trojan Killer will handle such situations perfectly. This is an application that requires root that recognizes some of the most popular, stubborn viruses that display ads on Android and try to install additional applications.
Download Stubborn Trojan Killer
Unfortunately, this application requires ROOT or administrative rights to be fully functional. ROOT is performed in different ways, and it all depends on which device model we are using. If you want to use this virus removal program, you must start your Android first. Below you will find a few generic rooting methods worth checking out:
- How to make root using KingRoot
- How to Root with Kingo Android Root
- How to Root with VRoot or TowelRoot
Once you have a rooted device, you must download the Stubborn Trojan Killer app from the Play Store and then allow it ROOT access when you launch it. The next steps are simple - we start scanning our phone and wait for the operation to complete. If the application detects any virus that other tools cannot remove, you can be sure that it will be permanently removed.
After removing the virus using the "KILL" button, the phone must be restarted. Now the malicious app like the mentioned "com.android.push.alarm" will be permanently removed from the phone and no trace will be left. Stubborn Trojan Killer is a great tool, perfect for removing those stubborn viruses that can't be moved by any other means.
Method #4 - Restart your phone to factory settings
What is the oldest way to solve computer problems? Creation of the so-called "Format". On Android, we can do the same. If the methods above don't work and you can't use ROOT to use more advanced virus detection and removal apps, you can simply factory reset your phone. This option will delete all data from your phone, including apps - everything will be restored to its original state, for example, when you take your phone out of the box.
The ability to restore factory settings can be in different places. For example, on Samsung smartphones, go to "Settings > Accounts > Backup & Reset", and then select the option to restore factory settings. In turn, this option is hidden in Huawei phones. "Settings > Backup and Erase Data > Factory Resets". Typically, this will be in security settings, copies, or accounts.
After selecting the factory reset option, the phone will restart and a green robot icon will appear on the screen, indicating that data deletion and recovery operations are in progress. Eventually, the phone will restart again and you will need to reconfigure your Google account.
Why did your mobile phone suddenly start behaving differently than usual, or even “healed” with its “life”? Perhaps because a malicious program has settled in it. Today, the number of viruses and trojans for Android is growing exponentially. Why? Yes, because the cunning virus writers know that smartphones and tablets are increasingly being used by our fellow citizens as electronic wallets, and they are doing everything to move funds from the owners' accounts into their pockets. Let's talk about how to understand that a mobile device has picked up an infection, how to remove a virus from Android and protect yourself from re-infection.
Symptoms of a virus infection on an Android device
- The gadget turns on longer than usual, slows down or suddenly reboots.
- In the history of SMS and phone calls, there are outgoing messages and calls that you did not make.
- Money is debited from your phone account by itself.
- Ads appear on the desktop or in the browser that are not associated with any application or site.
- Programs are installed by themselves, Wi-Fi, Bluetooth or a camera are turned on.
- Lost access to electronic wallets, mobile banking, or for unknown reasons, the amount in the accounts has decreased.
- Someone has taken over your account in social networks or instant messengers (if used on a mobile device).
- The gadget is blocked, and a message is displayed on the screen that you have violated something and must pay a fine or simply transfer money to someone for unlocking it.
- Applications suddenly stopped running, access to folders and files was lost, any device functions were blocked (for example, buttons are not pressed).
- When you start programs, messages pop up, like "an error occurred in the com.android.systemUI application."
- Unknown icons appeared in the application list, and unknown processes appeared in the task manager.
- The anti-virus program informs you about the detection of malicious objects.
- The anti-virus program was accidentally deleted from the device or does not start.
- Your phone or tablet battery is draining faster than usual.
Not all of these symptoms are 100% indicative of a virus, but each is a reason to immediately scan your device for infection.
The easiest way to remove a mobile virus
If the gadget has kept working, the easiest way to remove the virus is with the antivirus installed on Android. Run a full scan of the phone's flash memory, if a malicious object is detected, select the "Delete" option, saving the neutralized copy in quarantine (in case the antivirus mistook something safe for a virus).
Unfortunately, this method helps in about 30-40% of cases, since most malicious objects actively resist their removal. But there is control over them too. Next, we will look at options for when:
- the antivirus does not start, does not detect or remove the source of the problem;
- the malicious program is restored after removal;
- the device (or its individual functions) is blocked.
Removing malware in safe mode
If you can't clean your phone or tablet normally, try using the safe mode. The bulk of malicious programs (not only mobile ones) do not show any activity in safe mode and do not prevent destruction.
To boot the device into safe mode, press the on/off button, put your finger on "Power off" and hold it until the message "Entering safe mode" appears. After that click OK.
If you have an old version of Android - 4.0 and below, turn off the gadget in the usual way and turn it on again. When the Android logo appears on the screen, press the Volume Up and Volume Down keys at the same time. Hold them until the machine boots up completely.
While in safe mode, scan your device with an antivirus. If there is no antivirus or it does not start for some reason, install (or reinstall) it from Google Play.
In this way, advertising viruses such as Android.Gmobi 1 and Android.Gmobi.3 (according to Dr. Web classification) are successfully removed, which download various programs to the phone (in order to increase the rating), and also display banners and ads on the desktop.
If you have superuser (root) rights and you know exactly what caused the problem, launch a file manager (for example, Root explorer), follow the path where this file is located and delete it. Most often, mobile viruses and trojans place their bodies (executable files with the .apk extension) in the system/app directory.
To switch to normal mode, simply reboot the device.
Removing mobile viruses through a computer
Removing viruses on the phone through a computer helps out when the mobile antivirus does not cope with its task even in safe mode or the device functions are partially blocked.
It is also possible to remove a virus from a tablet and phone using a computer in two ways:
- using an antivirus installed on a PC;
- manually through a file manager for Android gadgets, for example, Android Commander.
Using an antivirus on a computer
To scan files on your mobile device with an antivirus installed on your computer, connect your phone or tablet to the PC with a USB cable, selecting the "Like a USB drive" method.
Then turn on USB.
After that, 2 additional “disks” will appear in the “Computer” folder on the PC - the internal memory of the phone and the SD card. To start a scan, open the context menu of each drive and click "Check for viruses".
Removing malware using Android Commander
Android Commander is a program for exchanging files between a mobile android gadget and a PC. Running on a computer, it provides the owner with access to the memory of a tablet or phone, allows you to copy, move and delete any data.
For full access to all the contents of the android gadget, you must first obtain root rights and enable USB debugging. The latter is activated through the service application "Settings" - "System" - "Developer Options".
Next, connect the gadget to the PC as a USB drive and run Android Commander with administrator rights. In it, unlike Windows Explorer, protected system files and directories of the Android OS are displayed - just like, for example, in Root Explorer - a file manager for root users.
The right half of the Android Commander window shows the directories of the mobile device. Find the executable file of the application (with the .apk extension) that is causing the problem in them and delete it. Alternatively, copy suspicious folders from your phone to your computer and scan each of them with an antivirus.
What to do if the virus is not removed
If the above operations did not lead to anything, the malware still makes itself felt, and also if the operating system has ceased to function normally after cleaning, you will have to resort to one of the radical measures:
- reset with restoration of factory settings through the system menu;
- hard reset through the Recovery menu;
- flashing the device.
Any of these methods will bring the device to the state as after purchase - it will not have any user programs, personal settings, files and other information (data about SMS, calls, etc.). Your Google account will also be deleted. Therefore, if possible, transfer the phone book to the SIM card and copy paid applications and other valuable items to external media. It is advisable to do this manually - without using special programs, so as not to accidentally copy the virus. After that, proceed to the "treatment".
Restoring factory settings through the system menu
This option is the easiest. It can be used when the functions of the operating system and the device itself are not blocked.
Go to the Settings app, open the Personal - Backup section and select Factory Reset.
Hard reset via Recovery menu
A “hard” reset will help deal with malware if it is not removed by any of the above methods or has blocked the login. To our delight, access to the Recovery menu (system restore) is preserved.
Logging into Recovery on different phones and tablets is carried out in its own way. On some, you need to hold down the “Volume +” key when turning it on, on others - “Volume -”, on the third - press a special recessed button, etc. The exact information is contained in the instructions for the device.
In the Recovery menu, select the option "wipe data / factory reset" or simply "factory reset".
flashing
Flashing is essentially a reinstallation of the Android OS, the same last resort as reinstalling Windows on a computer. It is resorted to in exceptional cases, for example, when a certain Chinese virus is embedded directly into the firmware and lives on the device from the moment it was “born”. One such malware is the android spy 128 origin spyware.
To flash a phone or tablet, you will need root rights, a distribution kit (the firmware itself), an installation program, a computer with a USB cable, or an SD card. Remember that each gadget model has its own, individual firmware versions. They usually come with installation instructions.
How to Avoid Virus Infection of Android Devices
- Install mobile applications only from trusted sources, refuse hacked programs.
- Update your device as system updates are released - in them, developers close vulnerabilities that are used by viruses and trojans.
- Install a mobile antivirus and keep it always on.
- If the gadget serves as your wallet, do not let other people access the Internet from it or open unverified files on it.
