Microsoft’s Recall Feature: A Double-Edged Sword
Introduction to Recall
Microsoft’s CEO Satya Nadella has praised the company’s new Recall feature, describing it as a “photographic memory” for your PC. This tool captures a screenshot of your desktop every five seconds, which has been both lauded and criticized within the cybersecurity community.
Security Concerns
On Wednesday, James Forshaw, a researcher with Google’s Project Zero vulnerability research team, published findings that show how someone with access to a victim’s machine could easily siphon out all the user’s history recorded by Recall. Forshaw’s technique does not require any privilege escalation, making it a significant security risk.
“You don’t need any privilege escalation, no pop-up, nothing,” says Hagenah. “This would make sense to implement in the tool for a bad guy.”
Immediate Exploitation
Just an hour after discussing Forshaw’s findings, Hagenah added the simpler of Forshaw’s techniques to his TotalRecall tool. He confirmed that the trick worked by accessing all the Recall history data stored on another user’s machine without needing administrator access. “So simple and genius,” he wrote in a text after testing the technique.
Implications for Users
This confirmation removes one of the last defenses Recall’s supporters had against criticisms that the feature acts as pre-installed spyware. “It makes your security very fragile, in the sense that anyone who penetrates your computer for even a second can get your whole history,” says Dave Aitel, the founder of the cybersecurity firm Immunity and a former NSA hacker. “Which is not something people want.”
Current Status and Future Plans
Security researchers have been testing Recall in preview versions ahead of its expected launch later this month. Microsoft plans to integrate Recall on compatible Copilot+ PCs with the feature turned on by default. The Zero Byte reached out to Microsoft for comments on Forshaw’s findings, but the company has yet to respond.
Conclusion
The revelation that hackers can exploit Recall without using a separate privilege escalation technique adds to the perception that the feature was rushed to market without proper cybersecurity review. Despite Nadella’s assurances, the feature’s security vulnerabilities remain a significant concern.
3 Comments
Can’t say I’m surprised by this news!
Typical Microsoft—overpromising and underdelivering yet again.
How much clearer can it be that we’re not secure even with big tech companies!