DNSChanger is a notorious class of malware that secretly alters a device’s Domain Name System (DNS) settings to redirect internet traffic through rogue servers controlled by cybercriminals. Originally created by an Estonian cybercrime ring called Rove Digital, it infected over four million computers and home routers at its peak, allowing hackers to hijack search results, inject fraudulent ads, and steal sensitive data.
Because your internet traffic is only as safe as the DNS servers you use, understanding how DNSChanger operates—and the difference between malicious hijacking and legitimate DNS changing—is critical to maintaining online security. How DNSChanger Attacks Your Traffic
To understand the threat, it helps to understand the Domain Name System. DNS acts as the internet’s phonebook, translating human-readable website names (like google.com) into numerical IP addresses (142.250.190.46) that computers use to route data.
When DNSChanger infects a system, it compromises this process through a sequence of steps: What’s a DNS Changer Smart and Safe Browsing Guide
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