The 2007 cyberattacks on Estonia happened when hackers from around the world started attacking websites in Estonia. Hackers were able to send a lot of traffic to Estonian websites, which made them crash and slow down. This made it very hard for people living in Estonia to use their computers, bank online, or even use their phones. People in Estonia were very upset and the government had to get involved to fix the problem. They put in place new security measures to protect Estonia's cyber-infrastructure, so the cyber-attacks wouldn't happen again.