“In more extreme cases, Level 3 can essentially block bad traffic from harassing victims, and effectively shut down or disrupt the hackers’ attacks.
So why aren’t ISPs doing more to crack down on cybercrime? The issue is that an ISP’s ability to differentiate between normal and malicious internet traffic has limits, and finding ways to properly respond can open a whole can of worms.”
Source: Amid cyberattacks, ISPs try to clean up the internet | PCWorld
