Social Media

The Register – @TheRegister

https://twitter.com/theregister
Twitter profile: Biting the hand that feeds IT. Technology and science news for world+dog. 
Follow us: Science and technology news for the world

CREST – @CRESTadvocate

https://twitter.com/crestadvocate
Twitter profile: CREST is the not for profit professional body representing the ethical security testing & cyber incident response industry
Follow for: Industry news and events

LinkedIn

Security Wonks

https://www.linkedin.com/groups/6807544/profile

Security Wonks is a news and knowledge exchange resource powered by the infosec community. Security and IT professionals are invited to share their insights and expertise, as well as news on trending security issues.

Type: Professional Group
Members: 1,628

SC Magazine UK (Information Security)

https://www.linkedin.com/groups/1833658/profile

This group is open to professionals working in information security and risk management and is affiliated to SC Magazine and SC branded events including conferences. The SC brand provides information and intelligence for professionals working in information and organisational security.

Its followers include FTSE 100 CISOs and CSOs who are relied upon to protect their businesses from the wide-ranging data threats that exist in the world today.

Type: Networking Group
Members: 6,334

SANS Digital Forensics and Incident Response

SANS provides computer forensics training via live classroom training events and online.

The SANS Digital Forensics and Incident Response community offers digital forensics and incident response professionals an opportunity to learn, discuss, and share current developments in the field. It also provides information regarding digital forensics and incident response training, certification, and events.

https://www.facebook.com/sansforensics

Blog

Security Bistro

http://ddosprotectionblog.corero.com/blog/
IT network security and DDoS security news. Email security, cyber security, spear-phising

Krebs on Security

http://krebsonsecurity.com/
In-depth Security news and investigation

Security Bloggers Network

http://www.securitybloggersnetwork.com/security-bloggers-network-the-feed/ 
The Security Bloggers Network is the largest collection of information security focused blogs and podcasts in the world. Of the almost 300 different blogs and podcasts included, each one has requested to be included in the aggregated feed.

TAO Security

http://www.taosecurity.com/
Since 1998 Richard Bejtlich has defended Western interests from advanced digital intruders. Mr. Bejtlich promotes Network Security Monitoring solutions to help global organizations stay in business by detecting and responding to digital threats.

SecurityWatch

http://bhconsulting.ie/securitywatch/
Brian is recognised internationally as an expert in the field of information security and has worked with numerous companies in the private sector and with government departments, in Ireland, Europe and throughout the United Kingdom. Brian has also provided advice to the European Commission on matters relating to information security. He is also on the advisory board for a number of innovative information security companies.

SANS Digital Forensics and Incident Response Blog

http://digital-forensics.sans.org/blog
The SANS Digital Forensics and Incident Response community offers digital forensics and incident response professionals an opportunity to learn, discuss, and share current developments in the field. It also provides information regarding digital forensics and incident response training, certification, and events.

ConCon Blog

http://www.contextis.co.uk/resources/blog/
Contains news and detailed analysis of research projects and recently discovered security vulnerabilities from Context Information Security.