CERTCOOP : http://certcoop.eu/
OWASP Top 10 Most Critical Web Application Security Risks (2017): OWASP top 10 – 2017
CWE/SANS TOP 25 Most Dangerous Software Errors: CWE/SANS TOP 25
Securing PHP web applications: https://php.earth/docs/security/intro
Network forensics: Infosec – Network forensics , ENISA training for network forensics