Virus-writers

Retr0 // RRLF
DiA // RRLF
mANiAC89 // RRLF
Second Part To Hell (ex RRLF member)
Hutley (ex RRLF member)

WarGame // DooM RiderZ (ex EOF member)

free0n (ex DooM RiderZ member)

VirusBuster // 29A (Trader)
GriYo (ex 29A member)
Vecna (ex 29A member)

505
herm1t
Z0MBiE

Groups

Ready Rangers Liberation Front (RRLF)
DooM RiderZ
F-13 Labs
Fat Assembler Team (FAT)
Purgatory Virus Team
Project of Conceptual Research (PCR)

29A (disbanded)
International Knowledge eXchange (iKx) (disbanded)
Dark Coderz Alliance (DCA) (disbanded)

Resources

VX Heavens
VirusTech (ru)
VX Chaos

Security

Wired-Security (by SkyOut)
SecurityFocus
Hell Knights Crew

Malware analysis

VirusTotal Online Malware Scanner
VirSCAN
Jotti's Online Malware Scanner
Anubis Sandbox
Sunbelt Sandbox

Reverse Code Engineering

The Reverse Code Engineering Community
OpenRCE
Tuts 4 You
BiW Reversing
CRACKL@B (ru)

Other

Piotr Bania

Wasm (ru)
System Coders Zone (ru)

OSNews