Sony rootkit prompts clampdown on CD use
Published: 14 Nov 2005 13:50 GMT
Sony's ill-fated decision to include rootkit-like copy-restrictions on some of its music CDs is prompting some companies to review whether they allow their staff to use personal CDs at work.
Andrew Yeomans, vice-president for global information security at investment bank Dresdner Kleinwort Wasserstein, told ZDNet UK that he is already assessing whether his firm need to tighten up their controls. Last week, Trojan horses emerged that avoid detection by using the digital rights management (DRM) software used by Sony on some of its audio CDs. This software uses the same techniques used by rootkit malware to hide itself from the operating system, which makes it particularly difficult to detect.
"I'm reviewing the autorun settings for music CDs, but not planning to ban their use," said Yeomans. "We certainly don't want arbitrary software to be installed."
Yeomans added that it cannot prevent all its employees from running executable programs from a CD or download, as some users have to be given administrator rights to use certain applications — which would allow them to override such restrictions.
Richard Starnes, president of the Information Systems Security Association (ISSA), told ZDNet UK that other companies should consider whether they need a policy on CD use.
"This is certainly something that would trigger a review of policies. I would advise companies to review the situation," said Starnes.
"If it's solely a Sony issue, it is easier for a company to make a decision that it will not allow particular Sony CDs, but if it becomes widespread then it becomes difficult to decide what CDs are allowed or not allow," added Starnes, who was speaking before Sony announced it had stopped producing CDs containing the rootkit-like software, called XCP.
Other companies have confirmed that they are also watching the situation closely.
"Something that can get in and hide itself would have the security people screaming their heads off," said the capacity manager at one major financial firm, who asked to remain anonymous.
"Up until now they thought that audio CDs are safe. I think that will change, and I wouldn't be surprised if every major bank changed their policy. The fact that this software can be used to hide other stuff means that the possibilities for getting at customer data are horrendous," he added.
Opposition to Sony's behaviour has been fierce, with threats of boycotts and even legal action.
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