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Dropbox says about 5,000 accounts compromised in August hack

By Thomson Reuters Sep 1, 2026 | 8:52 PM

Sept 1 (Reuters) – Dropbox said on Tuesday that around 5,000 accounts were compromised last month, with hackers viewing and downloading ​content stored on the cloud-storage platform.

Here ‌are a few details:

• Some Dropbox users received an email from the company on Monday notifying them that their accounts have been accessed without authorization between ‌August ​4 and August 21, Dropbox ⁠confirmed after Bloomberg News ⁠reported the hack earlier in the day.

• Hackers accessed files in fewer than a third of the compromised accounts, the company ​said.

• Shares of Dropbox fell around 2.4% in extended trading on Tuesday.

• Dropbox told ⁠Reuters that it identified unauthorized ⁠access affecting accounts linked to ​a Lenovo ID that did not have its ​two-factor authentication enabled, prompting the company to terminate ‌all sessions authenticated through a Lenovo ID.

• The company has removed any links between Lenovo IDs and Dropbox accounts and changed its ⁠systems so that users must enter their Dropbox password before accessing an account through Lenovo.

• Dropbox said ⁠it had ‌reported the incident to data ⁠protection regulators.

• Lenovo identified a “legacy integration” ​between ‌Lenovo ID and Dropbox that “could be ​used to ⁠improperly authenticate certain Dropbox accounts”. The company said its own customers were not affected and that an investigation was ongoing.

(Reporting by Fabiola Arámburo and Mrinmay Dey in Mexico City; Editing by ​Sherry Jacob-Phillips)