DoubleVPN is a Russian-based VPN service that double, triple, and even quadruple-encrypts data sent through their service. Threat actors commonly used this service to obfuscate their IP addresses when performing cyberattacks. The service was heavily advertised on both Russian and English-speaking underground cybercrime forums as a means to mask the location and identities of cybercrime operators and phishing fraudsters. Law enforcement seized the servers for DoubleVPN and took personal information, logs, and statistics for the service’s customers.
Source: https://www.bleepingcomputer.com/news/security/doublevpn-servers-logs-and-account-info-seized-by-law-enforcement/