The advancement of technology and digital connectivity has been highly successful in providing people with a good number of benefits but also has been successful in paving the way for new inventive methods of cyber-attacks. Among all of these methods, there is a deceptive form of method which is known as overlay attack that is most commonly referred to as screen overlay attack and is based upon manipulation of the user interface layers on the mobile device devices which will fool the user into interact with the legitimate elements that seem to be very much authentic.
In the world of mobile app protection, overlay attack is a sophisticated form of cyber-attack that will be capitalising on the manipulation of the user interface elements. The attacker in this particular case will be crafting the deceptive overlay that will be a completely transparent or visually identical screen that has to be placed on the top of the legitimate application screen on the mobile device. This is particularly very deceptive in its basic nature because it will perfectly blend with the application’s original interface and will make it incredibly challenging for unsuspecting users to identify and deal with illicit activity. This acting technique will begin when the attacker introduces the user to grant certain permissions and download the innocent application which will have malicious coding into it. Once the installation has been done the attacker will be the malicious overlay attack whenever the user interacts with the sensitive application for example banking and social media applications. The legitimate layer in this particular case will be the duplicate of the original one in terms of appearance and functionality of the authentic screen and further will be receiving the user in terms of believing that they are interacting with the legitimate application. Some of the common categories of the overlay attacks have been justified as follows:
- Data harvesting and input capture: This is a specific type of screen overlay attack that has been used by cyber criminals in the perspective of stealing personally identifiable information, transaction details and other sensitive data. The attack in this particular case will be focusing primarily on capturing the user inputs rather than inducing the unwanted click and permissions. In this scenario, the attacker will be very first employing the seemingly Basic application that has been embedded with malicious coding to establish the legitimate overlay and to understand this people need to have a clear idea about the decision of the malicious application, detecting the targeted application and dealing with the user data.
- Mobile Malware delivery: This is one of the most important methods used by cybercriminals in terms of installing the malicious system into the user’s mobile device which will lead to the screen overlay attack. The strategy in this particular case will be frequently targeting Android devices and will be manipulating the legend-made functionalities like accessibility services or the ability to install the application from unknown sources.
- Mobile privilege escalation: This is the basic strategy that has been employed by cyber criminals in the world of screen overlay attacks and will be working by exploiting the trust of unsuspecting users because the attacker, in this case, will be escalating the privilege of malicious application that further will be broad in the reach on the device and the potential for damage.
- Some of the most important tips and tricks that you need to know about managing screen overlay attacks have been justified as follows:
- Identification and mitigation of the threats: The very first step to be taken seriously in this particular area is to detect the presence of an overlay attack or any other kind of malicious application on the user device before the sensitive data and the functions have been exposed. Using the advanced level software in this particular case is very important for people so that everyone will be able to focus on regular scanning for potential threats very easily and eventually will be able to block the applications before they read any kind of damage.
- Implementing comprehensive authentication: This point will be all about using solid and strong authentication methods that further will contribute significantly to the defence efforts. For example, a one-time password code should not be displayed if there is a chance that the user could be misled by any kind of malicious overlay activity. Having a clear idea about the use of biometric authentication in this particular case is important because it will provide people with an improved element of security over other options.
- Monitoring the user behaviour: To further promote the enterprise app security it is always very much recommended for people to improve the app code protection with the help of monitoring of the user behaviour. This will be a clear indicator of the potential overlay attack and any kind of unusual activities in this case that will deviate from the typical behaviour of the legitimate user should be investigated so that everyone will be able to carry out things very well.
The necessity of blocking the screen overlay attack in the Android application will primarily begin from regulatory and compliance matters because the potential damage in this particular case will lead to significant issues from the perspective of regulatory mechanisms. However, by going beyond the legal requirements it is also very important for people to take the concept of overlay attacks very seriously because this will be a significant threat to the security of the user data and will lead to a significant number of issues in terms of targeting the multiple forms of critical and user data. Having a clear idea about the transaction related to mobile purchases is also very important for people so that there is no scope of any kind of problem because blocking the screen overlay attack will not only help protect the users but also will be highly successful in maintaining the trust, ensuring the compliance and eventually safeguarding the integrity of the application. With such perspectives in mind, the organisations will also be able to promote the image in the industry and eventually will be able to contribute towards building of safe and secure ecosystem for applications.
