Martyn WilliamsSenior U.S. Correspondent, IDG News Service

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Martyn Williams covers mobile telecoms, security, Silicon Valley, and general technology breaking news for the IDG News Service, and is based in San Francisco.

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Watch as we follow one of Google's new self-driving cars

The vehicles represent a big technical leap forward

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Instagram said to be back in North Korea

The block of the photo sharing website disappears with as much mystery as it appeared.

PCWorld News

US visa system coming back online after major outage

Hundreds of thousands of people are waiting for US visas after significant system problems

PCWorld News

SEC said to be probing corporate hacks by FIN4 group

Group sends sophisticated phishing emails to gain information about mergers and acquisitions

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The US Navy's warfare systems command just paid millions to stay on Windows XP

Windows XP and other obsolete systems remain critical to the Navy's operations.

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After photo leak, North Korea said to block Instagram

Fire at iconic hotel could be trigger for the country's first known Internet filter.

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Google's driverless car fleet to double as it prepares for new tests

The company operates more than half of the autonomous cars permitted to drive on California roads

PCWorld News

Lyft to pay $300,000, make insurance changes in settlement with New York

The company had been accused of operating an illegal car for-hire service in the state

PCWorld News

US visa system won't be back online until at least next week

A hardware failure has stopped any visas from being issued at US embassies

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FCC plans to fine AT&T $100 million over 'unlimited' data plans

The government says AT&T should have made throttling clearer to customers.

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Uber driver deemed an employee by California Labor Commission

The company was ordered to reimburse a single driver $4,152, but the decision could completely blow up Uber's business model.

PCWorld News

Amazon to call on US Congress for fewer drone restrictions

The company wants to make money delivering items by drone in 30 minutes or less

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FBI investigates St Louis Cardinals over Houston Astros hacking

Suspicions were raised after internal Astros information began appearing online last year.

PCWorld News

FBI investigating series of fiber cuts in San Francisco Bay Area

Ten fiber cuts over four nights in the last year has investigators interested

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US fears second major breach exposed more employee data

Forms containing deeply personal information obtained by hackers, reports say.