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Signal is taking proactive steps to ensure Microsoft’s Recall feature can’t screen capture your secured chats, by rolling out a new version of the Signal for Windows 11 client that enables screen security by default. This is the same DRM that blocks users from easily screenshotting a Netflix show on their computer or phone, and using it here could cause problems for people who use accessibility features like screen readers.
While Signal says it’s made the feature easy to disable, under Signal Settings > Privacy > Screen Security, it never should’ve come to this. Developer Joshua Lund writes that operating system vendors like Microsoft “need to ensure that the developers of apps like Signal always have the necessary tools and options at their disposal to reject granting OS-level AI systems access to any sensitive information within their apps.”
Despite delaying Recall twice before finally launching it last month, the “photographic memory” feature doesn’t yet have an API for app developers to opt their users’ sensitive content out of its AI-powered archives. It could be useful for finding emails or chats (including ones in Signal) using whatever you can remember, like a description of a picture you’ve received or a broad conversation topic, but it could also be a massive security and privacy problem.
Lund notes that Microsoft already filters out private or incognito browser window activity by default, and users who have a Copilot Plus PC with Recall can filter out certain apps under the settings, but only if they know how to do that. For now, Lund says that “Signal is using the tools that are available to us even though we recognize that there are many legitimate use cases where someone might need to take a screenshot.”
