What is a Keylogger?
Keylogger malware operates stealthily in the background, capturing everything typed including credentials, private messages, search queries, and confidential information. Software keyloggers are distributed through phishing emails, malicious downloads, exploit kits, or piggybacked with legitimate software. Advanced keyloggers also capture screenshots, webcam images, clipboard contents, and application activity to provide complete context around captured keystrokes. Hardware keyloggers are physical devices inserted between keyboards and computers, less common but difficult to detect with antivirus. The captured data is either stored locally for later retrieval or transmitted to remote servers. Some keyloggers target specific applications (banks, email) to reduce data volume and avoid detection. Commercial keyloggers marketed for parental control or employee monitoring are repurposed for malicious use.
Business Impact
Keyloggers enable credential theft, corporate espionage, intellectual property theft, and privacy violations. When employees’ devices are infected, corporate credentials and sensitive communications are compromised. Customer devices infected by keyloggers lead to account takeovers, fraud, and data breaches traced back to service providers. Organizations face incident response costs, notification requirements, and reputational damage. Keyloggers on corporate networks may persist for months, continuously harvesting credentials and sensitive data. The stealthy nature makes them difficult to detect without specialized security tools.
Allure Security's Approach
: While Allure Security doesn’t directly remove keyloggers, understanding their role in credential harvesting informs threat detection. Monitoring for credentials being used in phishing attacks or appearing on dark web marketplaces can indicate keylogger infections, enabling earlier response.