CyberDefenders

CyberDefenders is a cyber defense training platform offering blue teamers a place to practice and build skills.

#246 in Studying & Teaching

About

Community size

18.8Kmembers

Member growth

Net change: +91
7-day rate: +0.49%

Oct 5 – 12, 2026

About this data

Approximately 18,796 members in this snapshot.

Membership increased by 91 between October 5, 2026 and October 12, 2026.

Ranks #246 by membership among 1,735 Studying & Teaching servers tracked by Deepcord.

Member change includes joins and departures across observations roughly a week apart. The growth rate is normalized to seven days.

Last observed: October 12, 2026. Compared with October 5, 2026.

Server Details

Whether you are a beginner or an experienced professional, CyberDefenders is the perfect place for you to practice, validate, and acquire the skills necessary for defending against cyber threats. Our platform provides a variety of services to help you become a better defender, from live CTF hosting (BlueRing) and professional training (BlueDemy) to hands-on practice areas (BlueYard). Join CyberDefenders to access quality resources and practice your cyber defense skills with the help of fellow practitioners in a safe and supportive environment. For more info, visit us at https://cyberdefenders.org/