If you think that someone with physical access to one or more of your devices has installed spyware, or if you are using Windows and think you’ve been infected with some kind of spyware trojan or virus, you need to deal with that first and foremost. Most people will be tempted to install some kind of anti-virus software and scan for malware, but that is pointless. Anti-virus software cannot detect many of the things that a person with physical access could do. The only meaningful response is to erase any potentially affected devices and reinstall their systems from scratch. Windows users will have to seek help with this elsewhere, but Mac and iOS users can find instructions for doing this here: