[thdrdt]

It is amazing how fast and effective those bots are.

I remember one time I installed Windows 95/98. I wanted the PC to be on internet but did not have a firewall for Windows. But I knew the internet address where I could get one.

So after installing Windows I took my chances, connected to the internet, downloaded the firewall asap, installed it, and was already too late. The PC was compromised within 10 minutes and I had to reinstall it.

[thih9]

Where did the malicious code come from?

[thdrdt]

Well not from the firewall because it was highly trusted software. With the firewall there were also no problems.

It was just that there were some holes in Windows that were exploited by bots.