It is important for a risk management strategy to focus on emerging threats and adapt to changes in the threat landscape. Which one of the following is not considered an emerging threat?

Question $23$ options:

exploits of a published vulnerability

zero$-$day exploits

spear$-$phishing and other targeted social engineering

new cyber crime tools, such as variations of ransomware

Malware$-$as$-$a$-$service or Ransomware$-$as$-$a$-$service $($cyber crime tools for rent$)$