Shameless plug: I have created https://infosec.pub/c/exploitdev https://infosec.pub/c/exploitdev, a community inspired by /r/netsec, /r/vrd and /r/ReverseEngine

Shameless plug: I have created https://infosec.pub/c/exploitdev https://infosec.pub/c/exploitdev, a community inspired by /r/netsec, /r/vrd and /r/ReverseEngineering (no relation to any of these and I am not the admin of infosec.pub either) dedicated to technical security research content. The instance also has other infosec-related communities which I hope will get traction as well.