cicada-solvers
Cicada Solvers community resources and tools. See also the sister-project on gitlab:
Daniele Cono D'Elia
dcdelia
Tenure-track assistant professor at Sapienza University of Rome. Software & systems security
Sapienza University of Rome
Art of Hacking
The-Art-of-Hacking
Primarily maintained by Omar Santos - resources related to ethical hacking / penetration testing, digital forensics and incident response (DFIR), etc.