I always had the suspicion that Anti-Virus Software would make the perfect spying tool. Regular updates/access to the internet, needs to index all local files,

I always had the suspicion that Anti-Virus Software would make the perfect spying tool. Regular updates/access to the internet, needs to index all local files, closed source/proprietary software. Plus their freemium model helps them to spread the software. At the same time, the market seems surprisingly fractured with most big players coming from different nations around the world - something that I have so far rarely seen among other software products.