"Is there any link between data science and cyber security?" Data Science might be useful if you want to work in Security Information Management or in malware

"Is there any link between data science and cyber security?" Data Science might be useful if you want to work in Security Information Management or in malware analysis: big companies try to identify "weird behavior" in their networks, based on "normal behavior" records. "Where can I learn cyber security stuff?" Well, that depends on the stuff you are interested in... You should focus at first on learning "system administration" and at least a programming language like Python or Ruby. Network protocols would also be a bonus. Then, if you want to learn "offensive techniques" or "penetration testing", I suggest that you try websites like RootMe https://www.root-me.org/?lang=en https://www.root-me.org/?lang=en or Cryptopals cryptopals.com. Once you'll have resolved by yourself some of these challenges, you'll be able to try the "industrialized approach" of penetration testing. For this, this book is quite cool: https://www.nostarch.com/pentesting https://www.nostarch.com/pentesting. If you're more interested in "defensive techniques", you have tons of resources online. For instance: Secure Coding Best Practices: - https://www.owasp.org/index.php/OWASP_Secure_Coding_Practices_-_Quick_Reference_Guide https://www.owasp.org/index.php/OWASP_Secure_Coding_Practice... - https://security.berkeley.edu/secure-coding-practice-guidelines https://security.berkeley.edu/secure-coding-practice-guideli... => These documents will help you to understand what are the main risks in your apps For "general" cybersecurity: - ISO27001 standard - The NIST Cybersecurity Framework https://www.nist.gov/cybersecurity-framework https://www.nist.gov/cybersecurity-framework - PCI/DSS - https://www.us-cert.gov/ https://www.us-cert.gov/ => These documents will help you to understand what are the main risks in an organization based on their assets.