Social Media

Naked Security – @NakedSecurity

https://twitter.com/NakedSecurity
Twitter profile: Award-winning security news, opinion, advice and research from Sophos
Follow for: Security Industry news and views

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

InfoSec Careers (Information Security)

https://www.linkedin.com/groups/1364287/profile

InfoSec Careers is dedicated to connecting Information Security and Cyber professionals interested in a new permanent career opportunity or contracting jobs with specialist recruiters and hiring managers looking for new talent. This is THE LinkedIn Group for Cyber & Information Security Jobs and all those interested in IT Security news from industry.

This group is specifically relevant for those professionals holding CISM, CISA, CREST, BS7799 / ISO27001 Lead Auditor, CISSP, GIAC, PCI QSA, CRISC, CLAS or similar certifications.

Type: Networking Group
Members: 9,120 

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 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.

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.