Facing a federal complaint from a leading privacy advocacy organization and a revolt of tens of thousands of its users, Facebook on Tuesday night backed down from what many have seen as an onerous privacy policy.

Facebook informed all its users that it has, temporarily at least, reverted its terms of service to the previous version.

The policy had seemed to grant Facebook perpetual rights to users’ uploaded content, and the threatened complaint from the Electronic Privacy Information Center (EPIC) had demanded, essentially, that the social-networking service return to its previous terms.

Facebook CEO Mark Zuckerberg wrote in a blog post late Tuesday that the company had decided to do just that

Cybercriminals are exploiting a critical hole in Internet Explorer 7 that was patched a week ago by Microsoft, security firm Trend Micro warned on Tuesday.

The malicious code, which Trend Micro named “XML_DLOADR.A,” is hidden in a Word document. On unpatched systems, when the file is opened an ActiveX object automatically accesses a Web site to open a backdoor that installs a .DLL (dynamic link library) file that can steal information, according to a Trend Micro blog entry. The code sends stolen data to another Web address via port 443, Trend Micro said.

As a result of the back door, “anybody can run commands on the affected system,” said Jamz Yaneza, a senior threat analyst and researcher at Trend Micro.

Microsoft released a security patch for the vulnerability, and others, a week ago. The vulnerability arises from the browser’s improper handling of errors when attempting to access deleted objects.

Tens of thousands of Facebook users are protesting new policies that they say grant the social-networking site the ability to control their information forever, even after they cancel their accounts.

Facebook’s new terms of use, updated Feb. 4, largely went unnoticed until the popular consumer rights advocacy blog Consumerist.com pointed out the changes Sunday.

That prompted a clarification from Facebook’s founder, Mark Zuckerberg, although the new terms remain in force. Zuckerberg told users in a blog post Monday that “on Facebook, people own their information and control who they share it with.”

When someone shares a photo, a message or a status update telling friends what they are up to at the moment, they first need to grant Facebook a license so the site can pass that information along to authorized friends, Zuckerberg said. Without the license, he said, Facebook wouldn’t be able to help people share information.

Zuckerberg said the new terms are necessary to reflect the fact that friends may retain a copy of that message or other information once a user shares it with them.