MetaStealer is a type of malicious software known as an infostealer. It is designed to infiltrate computers and secretly harvest sensitive information such as login credentials, personal files, and cryptocurrency wallet data. Cybercriminals use MetaStealer to gain unauthorized access to victims' online accounts, steal valuable assets, or sell stolen data on dark web markets. Unlike some malware that damages systems, MetaStealer focuses on extracting data while remaining undetected, making it a significant threat to both individuals and organizations.