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

LinkedIn

Institute of Information Security Professionals (IISP)

The global professional Institute for those working in the Information Security/Information Assurance field. Affiliate, Associate and Full membership available to individuals and supporting membership available to corporations, LinkedIn Group is now open to security consultants and practitioners interested in IISP not just members.

This is intended to be a group for practitioners so recruitment consultants and other interested parties such as product sales executives may not be eligible to be linked to this group unless they are members of the Institute.
None of the views expressed here necessarily reflect the views of the Institute and are the individual's own.

Type: Professional Group
Members: 2,360
https://www.linkedin.com/groups?gid=124975&trk 

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 

Jericho Forum

The Jericho Forum is an international IT security thought-leadership group dedicated to defining ways to deliver effective IT security solutions that will match the increasing business demands for secure IT operations in our open, Internet-driven, globally networked world. 
This Linkedin group only indicates interest - for actual Jericho Forum members see https://www.opengroup.org/jericho/memberCompany.htm.

Type: Professional Group
Members: 1,057
https://www.linkedin.com/groups?home=&gid=47229

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

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.

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.