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Drive-By Download

An attack where malicious software is automatically downloaded onto a user's device without consent.

Understanding Drive-By Download Attacks


Unlike traditional malware downloads that require user action (e.g., clicking a malicious link), Drive-By Downloads occur silently in the background when a user visits an infected website. Hackers inject malicious scripts into legitimate or compromised web pages that automatically exploit system vulnerabilities.

How Drive-By Downloads Work


  1. Compromised Website Loads Malicious Code – Attackers inject malicious JavaScript or exploit kits into a website.

  2. User Visits the Infected Site – The malicious script automatically executes in the background.

  3. Exploitation of Browser/Plugin Vulnerabilities – The script identifies security flaws and delivers malware payloads.

  4. Malware Installation – The malware is downloaded and executed without user interaction.

Common Applications of Drive-By Download Attacks


  • Ransomware Deployment – Encrypts user files and demands payment.

  • Spyware & Keyloggers – Monitors keystrokes and steals credentials.

  • Botnet Recruitment – Turns the victim's device into a bot for DDoS attacks.

  • Ad Fraud & Cryptojacking – Uses system resources to mine cryptocurrency or generate fraudulent ad revenue.

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