what is avast s
Avast Software. Avast Software /ÉËvÉËst, -Ã¦st/ is a Czech multinational cybersecurity software company headquartered in Prague, Czech Republic, that develops antivirus software and internet security services. It was founded by Pavel BaudiÅ¡ and Eduard KuÄera in 1988 as a cooperative and has been a private company since 2010.