Microsoft has raised the alarm about a new malware strain that infects users’ devices and then proceeds to modify browsers and their settings to inject ads into search results pages.
Adrozek, the malware has been active since at least May 2020 and reached its absolute peak in August this year when it controlled more than 30,000 browsers each day.
Microsoft 365 Defender Research Team believes the number of infected users is much, much higher. Between May and September 2020, they observed hundreds of thousands of encounters of the Adrozek malware across the globe, with a heavy concentration in Europe and South Asia, and Southeast Asia.
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