> windows was developed before security was important I disagree - At best you could say DOS was developed before users knew security was important... Microsof

> windows was developed before security was important I disagree - At best you could say DOS was developed before users knew security was important... Microsoft has explicitly ignored security since DOS - because functionality sells better than security. Anyone who has worked with Unix systems has always understood just how much of a sieve Microsoft OSes are. Anyone with wisdom has said that about Windows from the very very beginning. Windows anti-virus has been a thing for a very long time. If your prior is the number of extreme security vulnerabilities in one year - the implication is that there are lot of undiscovered extreme security vulnerabilities. And competent WaaS (Weaponisation as a Service) now exists to quickly deploy exploits for obscure weaknesses or recently discovered weaknesses. Users and companies no longer have a few weeks grace before mass exploitation occurs. Use Windows, get pwned. The counterfactual is difficult: it is hard to prove you haven't been pwned... Anti-virus defence is often too late (plenty of examples eh!). I've seen very careful users/developers get caught out again and again. Not to say Windows is alone. Routers and other end devices are just as bad. And Android doesn't appear great to me either.