In May 2017, over 300,000 computers worldwide were infected by a ransomware called Wannacry. The wide spread nature of the attack was a major concern, in spite of this, the attack did not have long term effects and not a lot of money was made by the hackers.
Approximately 156 million phishing emails are sent every day. Phishing is a commonly used hack that impersonates a person or a company to gain information about people, it can also be used to install malware on a computer.
The Internet is immense, there is now more than 3.2 billion people using the internet.
Hackers are ahead of businesses and will continue to so unless the business start doing things differently.