Writers

SPTH (ex RRLF member)

GriYo (ex 29A member)
Vecna (ex 29A member)

herm1t
Z0MBiE

Groups

Fat Assembler Team (FAT)
F-13 Labs

29A (disbanded)
DooM RiderZ (disbanded)
Ready Rangers Liberation Front (RRLF) (disbanded)
International Knowledge eXchange (iKx) (disbanded)
Dark Coderz Alliance (DCA) (disbanded)

Resources

VX Heavens
VirusTech (ru)
VX Chaos

Malware Research

Microsoft Malware Protection Center
PandaLabs Blog
F-Secure Blog
ESET Threat Blog
McAfee Avert Labs Blog
SophosLabs Blog

Other

Reversemode
Rootkit
OpenRCE
Uninformed
Wasm (ru)
Cracklab (ru)

Wired-Security (by SkyOut)
Piotr Bania

OSNews