® 
Spyware
Definition
Spyware is malware that secretly collects information about a user's activities and sends it to an external party.
Spyware is malware that secretly collects information about a user's activities and transmits it to an external party. Spyware monitors keystrokes, screenshots, browsing behaviour, files and communications without the victim's knowledge. The commercial spyware market is estimated at over $12 billion, with state actors as major buyers.
How does spyware work?
Spyware installs through multiple vectors: bundled with free software, phishing emails, drive-by downloads on compromised websites, or exploitation of zero-day vulnerabilities in mobile operating systems. After installation, spyware operates in the background collecting data: keyloggers record all keystrokes, screen capture takes regular screenshots, file monitoring searches files, and network monitoring intercepts communications.
Types of spyware
Keyloggers record every keystroke, stealing passwords and sensitive information. Adware with spying functionality collects browsing data and personal information. Stalkerware is specifically designed for monitoring partners or family members. Commercial spyware like Pegasus (NSO Group) and Predator can fully compromise mobile devices including encrypted messages. Infostealers harvest stored passwords, cookies, crypto wallets and other sensitive data.
Impact on organisations
Spyware on corporate devices can lead to theft of intellectual property, trade secrets and credentials. GDPR considers spyware interception of personal data a data breach.
Protection
Use EDR solutions with behavioural analysis. Keep all systems updated. Be cautious with free software downloads. Monitor anomalous network traffic. Implement Mobile Threat Detection on corporate mobile devices.
How DEFION helps
DEFION detects spyware through Managed Threat Detection. Mobile App Security Assessments identify vulnerabilities enabling spyware installation.