Google Hacking
Visit the GHDB on the Exploit Database to find some nice searches....
Try: "site:linkedin.com xkeyscore"
Fight against Phase 1 Fight against Phase 2 Fight against Phase 3 Fight against Phase 4 IOC sharing Find random generatet URL's APT Simulator to test your capabilities CyCON 2019 Secure your Microsoft software Password's Cyber Threat Intelligence OSINT Information gathering
Attack Discord monitoring Telegram monitoring GitHUB monitoring reddit monitoring Open Source Intelligence Links The harvester cewl Creepy Tools (for Twitter) Facepager The Recon-ng Framework Meltego (and kali) Who has used social media in what area very good tutorials for security, networking, etc. Google Hacking open DNS resolver check open mail relay check howto find #btleaks
Malware analysis Equation MISP Forensic Splunk Incident response