Become an ethical hacker with this heavily discounted course

TL;DR: The Hacking In Practice: Ethical Hacking course is on sale for £9.86 as of August 8, saving you 87% on list price.

Renowned cybersecurity researcher and analyst Keren Elazari posited the perfect metaphor for hackers in a now-viral TED talk: hackers are the internet's immune system, pushing the internet to become stronger and healthier. 

While there are malicious hackers pushing that agenda by exposing flaws, there are also good guy/girl hackers (commonly referred to as ethical hackers) that work to fix security holes before they're exploited.