Former Sony CFO attacks Kazuo Hirai

Tamotsu Iba sends letter saying group is in danger of ‘sinking’

US DoJ scuppers $30bn semiconductor merger

Deal between Japan’s Tokyo Electron and Applied Materials collapses

India’s Ratan Tata buys in to Xiaomi

Investment to aid Xiaomi’s march into fast-growing Indian market

Ebay backs Google over Brussels inquiry

Auction site’s CEO says search group is rival in online shopping

Companies told to improve ‘cyber hygiene’

Businesses urged to focus on keeping internal systems up to date

Apple Watch review: Stylish, but slow

Best smartwatch on the market suffers from slow software

The political storm over the Googleplex

Concern about government snooping is mixed with anxiety about commercial use of data

LSE expands mentoring scheme across Europe

Programme aims to help companies attract backers and ease funding

Satellite technology explainer

Size and cost revolution encourages niche enterprises

The House of Wirecard

German tech stock grows at breakneck speed and buys obscure payment companies

The internet of vulnerable things

Cyber security breaches in an increasingly connected world could be catastrophic for infrastructure

Call to arms in UK e-sports market drive

Gamers recruited for weekly arena contests in London

Blue Bottle and Tartine look to scale

Coffee groups favoured by San Francisco techies merge to go global

Google’s average ad prices drop 7%

Wall Street shrugs off search company’s slight revenue miss

Falling PC demand puts heat on Microsoft

Pressure to show it can move faster in revamping for cloud

Amazon tops forecasts with 15% sales rise

Growth at Amazon Web Services compensates for strong dollar

Arris chief plays down tax perks of Pace deal

Bob Stanzione defends strategic merits of £1.55bn takeover

Google’s Schmidt takes stake in DE Shaw

Investor proves admiration for hedge fund manager by buying 20%

Google investors shrug off disappoinment

Sales and profits rise but still fall short of analyst forecasts

New MacBook and Chromebook Pixel laptops

The new interchangeable USB-C cable will improve computer design