Win32:Gepys-B [Trj] is a type of Trojan virus that infects computers by disguising itself as a legitimate program or file. It typically spreads through malicious email attachments, infected websites, or by exploiting software vulnerabilities. Once installed on a computer, Win32:Gepys-B [Trj] can steal sensitive information, compromise system security, and allow remote access to the infected computer. It is important to have up-to-date antivirus software and practice safe browsing habits to prevent infection by Win32:Gepys-B [Trj] and other malware.