Over the years we have seen how organizations have lost huge sums of money to cybersecurity attacks. A 2017 report from Cybersecurity Ventures predicted ransomware damages would cost the world $11.5 billion in 2019 and it is estimated that costs will reach $20 billion by 2021. When it comes to cybersecurity, companies still have a lot of work to do to find ways to anticipate and avoid data breaches. Let’s take a look at a few of the most notorious cybersecurity attacks that have happened over the last few decades and see what we can learn.