Major bug called ‘Heartbleed’ exposes Internet data. "A newly discovered security bug nicknamed Heartbleed has exposed millions of usernames, passwords and reportedly credit card numbers — a major problem that hackers could have exploited during the more than two years it went undetected," reports the Post's Lindsey Bever. "The bug was found in a type of software called OpenSSL, which is used on servers to encrypt sensitive information to protect people’s privacy. At least 500,000 servers were reportedly vulnerable."

Comcast the little guy? There’s competition everywhere, the company argues. "Comcast says it has loads of competition," reports the Post's Cecilia Kang, "everyone from Facebook to Apple, which Comcast says is contemplating a television set-top box to compete with cable service. Plus, Netflix and Amazon are already giants in online video, which also keeps the company on its toes, Comcast said in a regulatory filing for its proposed merger with Time Warner Cable."

A week before Tax Day, IRS misses crucial Windows XP deadline. Tuesday was the last day Microsoft offered free support for its 12-year-old Windows XP operating system -- potentially leaving those still using it more vulnerable. The Switch reports that less than a week before Tax Day, the IRS still had over 50,000 computers to upgrade. It plans to complete the upgrades by the end of the year, but in the meantime the IRS has signed an "extended support" agreement with Microsoft.

Hackers lurking in vents and soda machines. Nicole Perloth at the New York Times reports that hackers are increasingly infiltrating corporate networks via third-party devices and software. "Companies have always needed to be diligent in keeping ahead of hackers — email and leaky employee devices are an old problem — but the situation has grown increasingly complex and urgent as countless third parties are granted remote access to corporate systems. "

Edward Snowden: US government spied on human rights workers. "The US has spied on the staff of prominent human rights organisations, Edward Snowden has told the Council of Europe in Strasbourg, Europe's top human rights body," reports Luke Harding at the Guardian -- although Snowden did not name the groups he accused the NSA of snooping on.