Ransomware Decryptors:

https://www.watchpointdata.com/ransomware-decryptors

Open Source Cyber Security News:

https://n0where.net/

Secure Yourself or the Enterprise:

https://decentsecurity.com/

Virus Scan File or URL:

https://www.virustotal.com/

Hacker News:

https://news.ycombinator.com/

KitPloit Pentest Tools:

https://www.kitploit.com/

0x00sec:

https://0x00sec.org/

Thugcrowd:

https://thugcrowd.com/