Generally speaking, the cyber-attack footprint has become much more complex and advanced. Cybercriminals have become much more of an economy unto themselves, and have layered their tools, their data, their methods of attack in a very sophisticated way, and in a very coordinated way in many cases.
Criminals are creating tools, and both executing and renting access to those tools. Distributed denial-of-service attacks, or DDoS attacks, have become much more significant and advanced over the years. The cyber-landscape in threats and emerging trends in that area have definitely become more complex, and have increased in scale dramatically in recent years.