Originally Posted by nextri

Yeah. we have done a lot to prevent it from happening, and to catch malicious campaigns a lot faster.

We have banned and disabled a bunch of users and campaigns. We have created an advanced crawler which constantly checks and analyses campaigns, detects redirects and checks and auto disables them if sites are marked as malware in google and other virus services. It crawls and detects malware from more than 70 locations around the world, to also detect those who geo target their malware infection.
As soon as google safebrowsing marks a domain or url as malware, we detect it shortly after and auto disable it.

That being said, it's never possible to be 100% clean. There will always be ways to cheat the system, and people try all kinds of shit. But there are far fewer campaigns being approved now than there used to be, due to the fact that we can now detect these things a lot easier, and disable things automatically.