US internet security start-up firm GreenBorder, which specialises in using 'virtualisation' to create safe zones for online activities, revealed last night that it had been bought by Google.
GreenBorder, which is based California, posted a message at its website that it was acquired by internet search giant. Google confirmed the purchase of GreenBorder, saying the deal was completed in mid-May.
GreenBorder said it was no longer taking on new customers and would service current subscribers until their contracts expired. GreenBorder was founded in 2001 and backed by venture capital.
The terms of the deal and Google's specific plans for GreenBorder's technology were not disclosed.
GreenBorder lets computer operators combine hardware and software to create 'virtual' machines where tasks such as reading e-mail or exploring websites can be done without exposing systems to viruses or other malicious programmes.