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Hacking and cyber-spying on US energy firms over the past year point to Iran's growing capabilities, a cyber-security firm says. China and Russia are more serious threats, but Iran is closing the gap.

Satellite communications terminals, including those used by the US military, are vulnerable, says IOActive, a cyber-security firm. SATCOM industry officials say the terminals are secure.

The global economy is becoming so intertwined with the Internet, and the Internet has so many interlinked vulnerabilities, that one failure could cascade into a crash, a new study suggests.

Specifically, there are unconfirmed reports that the Heartbleed cybervulnerability has been used to attack encrypted communications systems of these control systems. DHS is investigating.

Website operators rushed to patch a cyber-security vulnerability called 'Heartbleed' that allows 'anyone on the Internet' to access website server memory without leaving a trace. A major concern: It existed 'in the wild' for two years.

With a halt in Windows XP updates, 'systems running unsupported software are exposed to an elevated risk to cyber-security dangers,' the DHS alerted industrial users, many of which never patch their computers anyway.

Plans for a fiber-optic cable between Russia and Crimea are 'at an advanced stage,' and could change the balance of cyber-power by providing Russia with more offensive options, experts say.

In a carefully worded speech on cyber-security described as a study in 'strategic ambiguity,' Secretary of Defense Chuck Hagel also called for the development of offensive cyber-capabilities and investment in the Pentagon's Cyber Command.

Ukraine is notorious worldwide as a haven for cyber-criminals, but Ukraine's need for international assistance could result in pressure to crack down on the country's cyber-underworld.

Human rights advocates worry that powerful surveillance technology is spreading in Africa, where many countries are becoming more authoritarian.

Malaysia Airlines Flight MH370, the Boeing 777 that Malaysia says went down in the Indian Ocean, likely was not the target of a cyber-attack, experts say. But, they add, the vulnerabilities of such planes are quite real.

An estimated $30 billion to $40 billion in illicit funds are laundered through the state’s commerce each year, says a new report on transnational criminal activity. Some question the report’s recommendations going forward.

After Sunday's disputed Crimea vote, Russian government sites were hit with a powerful wave of denial-of-service attacks, apparently in response to cyberattacks on official Ukrainian sites.

Iran is being recognized in the US intelligence community and in cyber-security firms protecting corporate America as having vaulted into the top 10 of the world’s offensive cyber-powers.

A group calling itself Anonymous Russia, which knocked out a Kremlin website in 2012 to protest Putin's third term as president, may have signaled a role in the attack on the Moscow site. 

The NSA is moving far beyond the collection of data in an attempt to implant malicious software on potentially millions of computers worldwide, mimicking a criminal 'botnet,' according to the newest Edward Snowden leak.

Fugitive Edward Snowden, speaking via webcast to Americans in Austin, Texas, said Monday his leaks about NSA surveillance programs led to better communications security, whereas NSA leaders' actions jeopardized national security.

Another Bitcoin exchange has folded, and a Bitcoin entrepreneur appears to have committed suicide. But experts continue to insist that it's too soon to write off the upstart crypto-currency.

Russia's recent conflicts with former Soviet states have included massive cyberattacks. But so far, none have been apparent in Ukraine, possibly because Ukraine can hit Russia back.

The closure of Bitcoin exchange Mt. Gox has rattled the market for the crypto-currency and sharpened the debate over whether it can be regulated without tarnishing its appeal.