The signatories argued that FinFisher's malware had been installed on the devices of activists, political dissidents, and regular citizens in countries with oppressive regimes, countries to which FinFisher would have been prohibited from selling its software.
The company's products are usually detected as malware by most antivirus products, including major products like Windows Defender.
FinFisher surveillance tools are available for Windows, iOS, and Android. In the past, cyber-security firms have spotted FinFisher infections in more than 20 countries. FinFisher markets its tools as meant for law enforcement investigations and intelligence agencies. Known customers include the German federal police and Berlin police. However, the company's tools have also been found on the devices of government critics and journalists in countries like Ethiopia, Bahrain, Egypt, and Turkey — countries where surveillance tools exports are prohibited.