ESET, a leading proactive threat detection company, analyzes what stalkerware is and what its risks are beyond cybersecurity.

This spyware is an invasive form of software that is installed on mobile devices or computers without the user's knowledge. Its primary purpose is to covertly monitor the victim's activities, from text messages and phone calls to GPS locations, emails, browsing history and more. Alarmingly, it is often installed by someone close to the victim, such as an intimate partner, family member or stalker.

“A few years ago, we talked about Android Stalkerware as an increasingly dangerous threat with risks even for those who spy. At that time, ESET telemetry data had detected an increase in stalkerware on these operating systems. Although a decrease in the activity of this type of software has now been identified, this does not mean that its activity is out of the game", comments Mario Micucci, IT Security researcher at ESET Latin America.

ESET stresses that the use of stalkerwares has serious implications for the privacy, security and emotional wellbeing of the people affected. In addition to violating privacy, it can lead to situations of harassment, manipulation, blackmail, and even physical violence. Victims may feel constantly watched, experience extreme emotional stress and even be coerced because of the information collected by the stalkerware.

While detecting stalkerware can be difficult, as it often operates in the background, hiding among legitimate applications. Some common signs of stalkerware presence include rapid battery drain, slow device performance or unusually high data usage.

To prevent stalkerware, ESET shares the following measures:

• Keep devices updated with trusted security software and apps.
• Avoid jailbreaking or rooting the device.
• Use strong passwords
• Enable two-factor authentication.

“The use of stalkerware raises serious ethical and legal issues. In many countries, installing stalkerware without the explicit consent of the person being monitored is illegal and can carry legal consequences for the perpetrator. Some governments and organizations are taking steps to regulate and criminalize the development, distribution, and use of this type of software”, said ESET's Micucci.

If you were a victim of stalkerware, seeking support is critical. Organizations dedicated to the fight against domestic violence and stalking, as well as counseling services and hotlines, can provide guidance, resources, and assistance to address this sensitive situation. ESET says that raising awareness about stalkerware and promoting the importance of digital consent are key steps in combating this problem.

Translated by: A.M