The FBI has done it before -- with the Playpen malware it installed on PCs using a Firefox exploit: https://www.eff.org/pages/playpen-cases-frequently-asked-qu

The FBI has done it before -- with the Playpen malware it installed on PCs using a Firefox exploit: https://www.eff.org/pages/playpen-cases-frequently-asked-questions https://www.eff.org/pages/playpen-cases-frequently-asked-que... It was challenged in court, but the courts did a bunch of hand-waving and said it all sounds constitutional. You find that a lot of the time with criminal cases involving bad people, the courts will often find a way to let things slide using the "ends justify the means" tactic.