Cyber-terrorism

Google says US officials, military personnel and journalists have had their email accounts compromised by Chinese hackers, as major US defence contractors also admit further security breaches.

China admits for the first time that it has an elite unit of cyber warriors in its army, as an intelligence source tells Channel 4 News the threat is real, potent, and will be utilised in warfare.

As Chinese hackers breach the computer systems of multinational energy companies one cyber expert tells Channel 4 News scanning our fingerprints before we send emails could become more common.

As Chinese hackers breach the computer systems of multinational energy companies one cyber expert tells Channel 4 News scanning our fingerprints before we send emails could become more common.

Uncovering the true scale of the WikiLeaks-inspired Anonymous cyber attacks, they were not as bad as we were led to believe, writes Technology Correspondent Benjamin Cohen.

Watch all the latest on the day’s big events at home and abroad – and contribute to our big conversation on the Channel 4 News live blog. Follow #c4news.

The WikiLeaks supporters behind attacks on various websites – including Mastercard and Visa, have sent footage to Channel 4 News of a cyber strike being carried out.

Channel 4 News learns that Britain’s serious crime agency is expecting an arrest warrant application from Sweden for WikiLeaks founder Julian Assange.

David Cameron is joining leaders at a Nato summit in Lisbon to discuss and sign an agreement to build a defensive shield in Europe against ballistic missile attacks.

An alleged member of al-Qaeda, thought to be part of the group blamed for the plane bomb plot, is being held in the UK as the government says more will be done to target terrorism overseas.

The Government is believed to have decided to keep “control orders”, which impose restrictions on terror suspects who have not been charged. The issue will be a “Coalition headache”, says Gary Gibbon.

The head of MI6, Sir John Sawers, denies that his agents engage in torture. Foreign Affairs Correspondent Jonathan Rugman says the historic speech is an attempt to combat negative media coverage.

Sir John Sawers, chief of the Secret Intelligence Service – known as ‘C’ in Whitehall, is the first serving MI6 chief to deliver a public speech on international terrorism – follow it live here.

A human rights group claims cyber attack knocked it offline following the release of an alleged torture video. An international security expert tells Channel 4 News this attack lacks “sophistication”.

The Royal Navy’s flagship aircraft carrier HMS Ark Royal is to be scrapped along with its fleet of Harrier jets as the coalition prepares to announce cuts in the Strategic Defence and Security Review.