Android operating system devices are quite vulnerable when infected by a virus. Every day there are news and information about the appearance of new malwares that affect thousands of users. Most of the problems come from installing third-party files and apps. Being an open source operating system, many developers program malicious apps. You accidentally end up installing them by confusing them with legitimate apps. Or because they promise features you’re looking for and you can’t find them in the apps available on Google Play.
Being infected by an Android Virus can have very serious consequences. They can steal your passwords, your private or personal files or even impersonate you. If you want to avoid such unpleasant situations, you should check your phone from time to time to see if it is infected or not. In case it is, you can take urgent steps to protect yourself. In many cases it will be enough to uninstall an app or delete a file. In others you will have no choice but to install an antivirus or anti-malware to help you. From Trastory we are going to check the most common viruses and attacks in Android, to teach you how to identify and eliminate them.
Most common malware
Fraudulent advertisements or Adware
One of the most common ways to infect devices is through Adware. Adware is the method used by cybercriminals to steal users’ data. Attackers use very flashy advertisements that turn out to be false. The most commonly used techniques are to promise new functionality on such well-known applications as Whatsapp or Facebook. For example, accessing photos of other people or spying on them without them knowing about it. It is also very common to simulate a page that warns you that your phone is infected by a virus. Plus, they’re rushing you if you don’t want to lose all your information. In this way they get users to click on the ad. Clicking takes youto a page where you are asked for a series of data to steal them.
Most of these ads stress that it is very urgent to take action, either because the user is going to lose information or because the promotion is limited. So, beware, always try NOT to click on any link that may seem suspicious.
The most common way to steal data from users is phishing. This technique consists of carrying out cyberattacks via e-mail or SMS messages. Another way can be through WhatsApp or another messaging application used by the user. These types of emails and messages have in common that they are usually very urgent, you are asked to immediately perform an action, which in most cases is to verify your username and password.
Always look carefully when you are asked for your username and password.
Once the data is obtained, they use it to extract money from bank accounts. Another purpose is to take advantage of user data from their social accounts for example, to build trust in other users and try to steal their data as well. This technique has been used a lot in recent years. When a contact of yours sends you a link, being a source of trust, we usually click without hesitation. It’s as easy as sending a message: “Look at that cool photo”, which takes you to a page that simulates Facebook login. In which you enter your data without realizing it and have actually given your access data to the attackers.
Today almost everyone uses their mobile phones to read mail and even access their online banking. The reception of these messages often sees it as normal and do not look at certain data that alert us that something is not right. The two most common are:
- the sender of the message is incorrect
- the link we have to click on is not the official one, it has small variations, as in the image.
Due to the strong increase of this type of scams, deceptions or frauds, companies are developing more intelligent technologies. These technologies detect potential threats in real time and warn the user of them.
How do I know if my mobile has a virus?
There is no exact method to know if your mobile has a virus or is infected by malware. But I’m sure he will if one of these things happens to him:
Installed applications that you have not downloaded. Certain types of malware are dedicated to installations on your mobile phone. In principle this type of malware is not very worrying, but they can block your terminal by excessive use of disk space or memory. The fact that this happens is that the attackers make an economic profit by installing these apps.
2. The phone asks for additional permissions. Other types of viruses are camouflaged under applications that are apparently legitimate, as they use the same name and even icon. But they start asking for permissions they shouldn’t have, like access to SMS or calls from your phone.
3. Excess ads on your mobile. Sometimes viruses are designed simply to show advertising to the user at all times. So if you start seeing ads on your mobile where there shouldn’t be, whether inside an application, in the startup window or elsewhere, you’ve probably been infected.
4. Your phone bill suddenly increases. This type of malwares are surely the ones that have given more problems to the users. In recent years, a multitude of applications have been detected that were installed by users and asked for permission to make telephone calls and/or send SMS. These applications then began to make calls or send messages to premium rate numbers.
How to avoid viruses and how to eliminate them
As we have commented, the easiest way for our phone to be infected is to install third-party applications. Or being the victim of fraudulent advertising. We advise you to always install official applications from the Play Store. In addition, the best option is to install an antivirus or antimalware to protect our device. There are many free options for this, such as Avast Mobile Security & Antivirus, Lookout or AVG Free Antivirus.
If your phone has already been infected, remove all applications that you don’t use regularly. All the ones you don’t remember installing yourself. Go to Menu -> Settings -> Application Manager, search for all suspicious and hit Uninstall. Another option is to install some ES File Explorer type application. It helps you to perform this management and removes all the junk files it detects immediately.
If you can’t detect and remove the virus yourself, one of the antivirus programs mentioned above will probably do it for you. And remember:
– Always be careful with the links they send you.
– Do not trust when you are asked to enter personal information.
– Do not download third-party applications if you do not really know they are free of viruses.