Epic uses BattlEye + their own Easy Anti-Cheat framework. Both run in kernel mode and read HWID at boot. Bans are issued in waves — usually weekly, occasionally daily.
Common reasons: cheat-software signatures, suspicious DLL injection, stolen accounts, VPN+VPN-stack patterns. Once your HWID is on Epic's blacklist, every account on that hardware is banned automatically.
Bypass requires changing HWID and creating a new Epic account from a different IP. We've documented the procedure in our knowledge base — it works in 95% of cases on the first try.
Disclaimer: HWID bypass after a confirmed cheat ban violates Epic ToS. We recommend HWIDChanger for legitimate use cases only — appealing false positives, recovering compromised accounts, etc.