Add content to watering hole attack (#6573)

* add content watering-hole-attack@dcvuKHq0nHgHLcLwtl4IJ.md

* Update src/data/roadmaps/cyber-security/content/watering-hole-attack@dcvuKHq0nHgHLcLwtl4IJ.md

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Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

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+# Watering Hole Attack
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+Watering Hole Attack is a type of cyberattack where the attacker targets a specific group of users by compromising a website or online resource that they are known to frequently visit. The name "watering hole" comes from the idea of predators waiting by a water source to attack prey, similar to how attackers wait for their targets to visit a compromised site.
+
+Visit the following resources to learn more:
+- [@article@What is a watering hole attack?](https://www.techtarget.com/searchsecurity/definition/watering-hole-attack)
+