Stalkerware: The Hidden Cybersecurity Threat You Shouldn’t Ignore
In cybersecurity, threats often come from faceless hackers or anonymous cybercriminals. But sometimes, the danger comes from much closer to home. Stalkerware is one such threat — a category of malicious software that can be used by someone you know to monitor your device and track your every move secretly.
At Alvarez Technology Group, awareness is the first step toward protection. Here’s what you need to know about stalkerware, how it works, and how to defend yourself.
What Is Stalkerware?
Stalkerware is software or an app installed on a device without the owner’s knowledge or consent, designed to monitor their activities secretly. It can:
- Track GPS location in real time
- Record calls and messages
- Access emails and social media accounts
- View browsing history
- Capture photos or videos through the device’s camera
- Turn on the microphone to listen to conversations
While some of these tools are marketed as parental control or employee monitoring apps, they cross into stalkerware territory when used to spy on another adult without their consent.

Legality in the United States
In the U.S., installing or using stalkerware without permission is generally illegal under federal and state wiretapping and computer crime laws. The only lawful exception is when surveillance is conducted under a court order — for example, by law enforcement during an investigation.
Even if an app is marketed for legitimate purposes, using it to monitor a spouse, partner, or colleague without consent can lead to criminal charges, fines, and imprisonment.
Commonly Misused Stalkerware Apps
Several apps have been linked to cases of domestic abuse, harassment, and illegal surveillance:
- mSpy – Marketed as a parental monitoring tool, but often misused to track partners.
- FlexiSPY – Offers advanced features like live call interception and ambient listening.
- Hoverwatch – Tracks location, records calls, and captures screenshots without detection.
- Spyzie – Can access messages, call logs, and social media accounts.
- Cocospy – Provides stealth location tracking and message monitoring.
These apps are not inherently illegal, but the way they are often used is.
How Stalkerware Works
Most stalkerware requires physical access to the device for installation. Once in place, it:
- Runs invisibly in the background
- Sends data to a remote server controlled by the installer
- Often disguises itself as a harmless system process or app
Detection can be difficult without specialized tools because it’s designed to be hidden.
Risks to Victims
- Loss of Privacy – Sensitive data like messages, photos, and location can be accessed without consent.
- Physical Safety Risks – Real-time location tracking can enable stalking or bodily harm.
- Data Breaches – Information collected by stalkerware is often stored insecurely, making it vulnerable to hackers.
- Emotional and Psychological Harm – Victims often experience anxiety, fear, and a loss of trust in technology.
- Legal Consequences for the Perpetrator – Unauthorized surveillance can result in criminal prosecution.
How to Protect Yourself
- Run a security scan with reputable antivirus or anti-stalkerware software.
- Check app permissions and remove any apps you don’t recognize.
- Keep your operating system updated to patch vulnerabilities.
- Use strong passwords and two-factor authentication to secure your accounts.
- Be cautious with device access — don’t leave your phone or laptop unattended.
- Seek professional help if you suspect your device is compromised.
Final Thoughts
Stalkerware is a growing cybersecurity and privacy issue that often hides in plain sight. Whether it’s marketed as a legitimate tool or not, using it to spy on another adult without consent is both unethical and illegal.
At Alvarez Technology Group, we help individuals and businesses protect their devices from all cyber threats, including stalkerware. If you suspect your device has been compromised, our team can help you detect, remove, and secure your technology.
Stay informed. Stay protected.