Are you a longtime user of Dropbox? Then you might be asked to change your password. Was the online storage service hacked? No… at least not recently. Instead, Dropbox says some login credential may have been compromised nearly four years ago

The company announced in a blog post Thursday that users who signed up for Dropbox prior to mid-2012 and haven’t changed their password since are being asked to update their login info.

Users will be prompted to make the change the next time they attempt to sign into their accounts.

“We’re doing this purely as a preventive measure, and there is no indication that your account has been improperly accessed. We’re sorry for the inconvenience,” the company says.

Dropbox says the action was initiated after security teams learned about an old set of Dropbox user credentials obtained in 2012 incident previously disclosed by the company.

At that time, Dropbox said an internal investigation found that usernames and passwords recently stolen from other websites were used to sign in to a small number of Dropbox accounts. The site contacted these users and helped them protect their accounts.

“We have dedicated security teams that work to protect our services and monitor for compromises, abuse, and suspicious activity,” the company says.

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