There were 58 targeted attacks a day on the computer systems of companies employing 250 staff or less during the last six months, almost 36 per cent of all targeted attacks on companies, Symantec said. This was up from 18 per cent at the end of December 2011. More...
Users from around the world reported difficulties logging on to the site after problems started at about 17:00 BST.
The service was affected for around two hours while engineers sought to solve the issue.
In a blog post, Twitter dismissed reports it had been hacked, and offered "sincere apologies" to its users.
"A cascading bug is one with an effect that isn't confined to a particular software element, but rather its effect "cascades" into other elements as well," explained Mazen Rawashdeh, the site's vice president of engineering. More...
He also recognized that the virus, which he compares to the Stuxnet virus built by programmers employed by the United States and Israel, adds weight to his warnings of the grave dangers posed by governments that manufacture and release viruses on the Internet.
“Cyberweapons are the most dangerous innovation of this century,” he told a gathering of technology company executives, called the CeBIT conference, last month in Sydney, Australia. While the United States and Israel are using the weapons to slow the nuclear bomb-making abilities of Iran, they could also be used to disrupt power grids and financial systems or even wreak havoc with military defenses. More...
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