Dropbox says about 5,000 accounts compromised in August hack

Dropbox Inc. reported that hackers accessed around 5,000 user accounts, viewing and downloading files from less than a third. The company secured the accounts and notified regulators and users. Dropbox shares fell 6.6% in postmarket trading. The breached accounts lacked multifactor authentication. Dropbox does not expect material business impact.

Dropbox reported a security breach affecting 5,000 accounts, with files accessed in some. The breach occurred via Lenovo IDs linked to Dropbox accounts without multifactor authentication. Dropbox shares fell 6.6% in postmarket trading. Both companies collaborated to address the issue, and Lenovo stated its customers were unaffected.

Hackers exploited a Lenovo ID flaw to access 5,000 Dropbox accounts, with files accessed in less than a third. The breach occurred due to a linked login path, requiring no Dropbox password. Dropbox and Lenovo have addressed the issue, but the incident highlights security risks of third-party identity systems. Dropbox shares fell 6.6% postmarket.

Dropbox reported that around 5,000 accounts were compromised between August 4 and 21, with hackers accessing files in fewer than a third. The breach was linked to Lenovo IDs without two-factor authentication. Dropbox shares fell 2.4% in extended trading. Both companies have taken steps to secure accounts and report the incident to regulators.

Dropbox (DBX) stock fell 1.8% after-hours following a data breach affecting 5,000 accounts. The breach, caused by a flaw in third-party authentication, led to unauthorized access. The company has secured accounts and notified regulators. Analysts had already reduced price targets due to growth concerns and leadership changes. The stock dropped from $34.93 to $33.66 after-hours.

Dropbox reported Q2 2026 revenue of $631.5M (+0.9% YoY), ARR of $2.6B (+1.0%), and 18.2M paying users. Non-GAAP operating margin was 39.7% and uFCF $283.5M. Q3 revenue guidance is $627M to $630M; FY2026 revenue $2.51B to $2.52B. Management also discussed a CEO transition and native AI integrations.