Martyn WilliamsSenior U.S. Correspondent, IDG News Service Follow me on Google+

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

PCWorld News

North Korea denies involvement in 'righteous' Sony hack

State media breaks silence on the Sony hack

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Hackers reportedly sent threatening emails to Sony employees

Pressure on law enforcement to find the hackers increases after employees were allegedly threatened.

PCWorld News

Bebe Stores says credit card data hacked

The retail chain becomes the latest to suffer theft of customer payment card information

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North Korea denies involvement in Sony Pictures hack

A government official denied involvement as experts continued to analyze the attack.

PCWorld News

North Korea unlikely to be behind Sony Pictures attacks

The tactics and publicity around the stolen documents are more in line with hacktivists, experts said

PCWorld News

Silicon Valley startups discover power of political lobbying

Uber and others have increased their spending in Washington in recent months

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Apple iMessage lawsuit will go ahead, California judge rules

The case, for which the plaintiff seeks class-action status, comes after years of missed iMessage problems

PCWorld News

A guide to the top mobile payments options

Apple Pay, Google Wallet or something else? Spending your money just got a whole lot easier.

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Microsoft releases 14 patches for Windows security problems

It's the largest number of patches issued in a single day so far in 2013 and 2014

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Vulnerability leaves iPhones open to fake app attack

Attackers can replace legitimate apps with fake ones that access and steal personal information

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Biggest ever Tor raid hits 410 underground sites; 17 arrested

Tor users are neither 'invisible nor untouchable,' a law enforcement official says. And the government proved it, with massive raids that closed hundreds of sites.

PCWorld News

The iPhone WireLurker malware - what you need to know

The malware is using new methods to target Apple users, but should you be worried?

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Not enough video in your Facebook news feed? Try a better phone

Facebook is delving deeper into the characteristics of phones to help it determine what to show users. Does yours make the cut?

PCWorld News

Apple hires new DC lobbyists for competition, IP issues

The law firm it used to battle Samsung will now lobby the federal government

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North Korea reportedly blocks Facebook and Twitter

The move affects foreigners who live in the country, as well as local citizens were already banned from using the services.