The race to make RAM that keeps its memory in a power outage

Firms face raids and fines of up to £500,000 for sending unsolicited text messages about credit or compensation.

The social network and Washington State sue a marketing firm over claims that it deceived users by hiding ‘Like’ buttons. The firm denies the charge.

The Russian man accused by Microsoft of being behind the Kelihos botnet attack insists he is “absolutely not guilty”.

Twitter says it now has the technology to censor tweets on a country by country basis, a move which is criticised by freedom of information campaigners.

A European Parliament rapporteur stands down in protest as a controversial anti-piracy agreement is signed by several countries.

While America is running down its manned space programme – further north – two Canadian students have shown that flying into space does not always have to be rocket science.

A crowdsourced version of the sci-fi classic Star Wars: A New Hope becomes an internet hit after nearly three years in production. This and more in this week’s tech news.

Kate Russell looks at ways to keep motivated when exercising and new innovations for education websites.

An £80m Home Office programme to give police forces Blackberrys and other mobile devices has been criticised by the National Audit Office.

Military experts gathered in London this week to discuss the growing threat of cyber-attacks to international security.

The firm’s UK boss responds to claims its smartphones are falling out of favour

With half the world online by 2016, the web economy in the G20 countries is set to nearly double in size to $4.2tn (£2.7tn), research suggests.

South Korea’s Samsung Electronics announces a 17% rise in profits in the last three months of 2011, as smartphone sales boosted earnings.

Keeping systems safe from attack

A crime is witnessed on Skype – how much evidence remains?

Intel is paying $120m (£76m) for RealNetwork’s video patents. Experts say it undermines claims that a “patent bubble” has burst.

Rights campaigners have criticised plans to ask search engines to demote illegal sites in order to fight piracy.

Facebook has “an 800 million-strong Neighbourhood Watch system” to protect against people carrying out malicious acts, the Leveson Inquiry hears.