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Avast Software s.r.o. is a subsidiary of Gen Digital. It is a Czech multinational cybersecurity software company headquartered in Prague, Czech Republic, that researches and develops computer security software, machine learning, and artificial intelligence. Avast had more than 435 million monthly active users and the second largest market share among anti-malware application vendors worldwide as of April 2020. As of 2025, parent company Gen Digital had approximately 4,000 employees worldwide.