A few questions about WannaCry

[Candles123]

1) They say its just going around the internet looking for computers, and it can go right in if they haven't updated Windows. How is the virus travelling around the internet? How does it enter a computer and what is the fix that prevents / lets it in?

2) Could this happen with Linux

3) Who is responsible for this issue?

[tekni5]

1) It's using a SMBv1 exploit, which can be done via LAN or via Internet if ports are open. Security Roll Up from March will fix it, there is also a specific release for other unsupported OSes like XP/8 & Server 2003. Disabling SMBv1 should also work.

2) Only in WINE and you'll have to run it yourself.

3) Partly NSA for weaponizing the exploit. Users for not updating. Hackers/Crackers for creating it.

[Candles123]

The the issue is that Windows leaves a port open which is accessible to anyone online? And the update closes it?