Computer security firm Sophos has warned that scammers are duping Facebook users with a bogus "Dislike" button that slips malicious software onto machines.

There is no "Dislike" version of the "Like" icon that members of the world's top social networking website use to endorse online comments, stories, pictures or other content shared with friends.

Hackers are enticing Facebook users to install an application pitched as a "Dislike" button that jokingly notifies contacts at the social networking service "now I can dislike all of your dumb posts."

Advertisement: Story continues belowOnce granted permission to access a Facebook user's profile, the application pumps out spam from the account and spreads itself by inviting the person's friends to get the button, according to Sophos.

The ruse was described as the latest in an ongoing stream of tricks that includes baiting booby-trapped links with messages including "the biggest and scariest snake" and "world's worst McDonald's customer."

Google's energy unit has entered into a deal to buy wind power from NextEra Energy for the next 20 years to power data centres.

The deal comes less than three months after the giant Silicon Valley Internet search company invested US$38.8 million in two wind farms in North Dakota, developed by NextEra Energy Resources, that generate enough energy to power more than 55,000 homes.

Google Energy will begin buying wind power from July 30 from NextEra's facility in Iowa at a predetermined rate, Urs Hoelzle, Google's senior vice president of operations, said in a blog on Google's website.

"Incorporating such a large amount of wind power into our portfolio is tricky, but this power is enough to supply several data centres," Hoelzle added.

Residents at Point Cook near Melbourne have stopped queuing large downloads and started bringing on-demand movies down the pipe in under 15 minutes after swapping "abysmal" ADSL1 connections for superfast broadband.

Three of the 1,500 residents in the coverage area of Telstra's fibre-to-the-home (FttH) trial network have spoken to iTnews about their experiences.

In doing so, they've answered a recurring question for the National Broadband Network (NBN) - just what will people do with 100 Mbps?

"I can completely understand why the NBN should go ahead," resident Paul Hart said.

"The internet's a completely different place once you've got 100 Mbps. Once you've got the speed you utilise it.

"Without a doubt it's a good thing."

Microsoft is cautioning users not to download fake versions of Microsoft Security Essentials, which are similarly named to the original, but are in fact rogue. The original Microsoft Security Essentials is fully functional and free from Microsoft and without charge for all legitimately registered users of MS Windows.
Fake Antivirus Storms Internet, Duping Users

Rogue antivirus products are notorious for having similar names, appearances and functions of legitimate antivirus software in an attempt to coax unsuspecting users into doling out hundreds of dollars towards unnecessary, and often harmful downloads.