Dropbox account hacked? Here’s what to do
Move fast and in the right order: reclaim the account through Dropbox’s official flow, kick the attacker out of every session, then close the door they came through — usually a password that leaked in a breach and was reused.
The August 2026 hijacks came through a Lenovo login, not a stolen password
Dropbox told affected users at the start of September 2026 that around 5,000 accounts were entered between 4 and 21 August. Nobody guessed a password. Press coverage - Bloomberg first, then Reuters, The Next Web, TechRadar, SecurityWeek and Security Magazine - describes a legacy Lenovo ID sign-in option that did not properly check who owned an email address, so an outsider could register a Lenovo account against someone else's address and then open the Dropbox account tied to it. Files were viewed or downloaded in fewer than a third of those accounts. Every account entered this way was missing multi-factor authentication. Dropbox has since killed the sessions that arrived through Lenovo ID and switched the integration off, so a Dropbox password is required again. That means the useful move now is not a password reset: it is checking what was opened in that window and turning on two-step verification, which would have stopped this outright.
Dropbox notice to affected customers, reported by Bloomberg and Reuters on September 1-2, 2026; mechanism and timeline from The Next Web, TechRadar, SecurityWeek and Security Magazine, September 2-4, 2026. Dropbox has published no public bulletin.
If your Dropbox account was hacked: start recovery at the official page (help.dropbox.com/accounts-billing/security), change the password to a unique one, sign out all other sessions, and re-check the recovery email and phone on the account. Then find out how the attacker got in — check whether your password appears in known breach data — and turn on two-factor authentication so it can’t happen again.
Recover your Dropbox account, step by step
These steps follow Dropbox’s official process. Official links only: account recovery · password reset.
Reset your password (unique) and end all other web sessions from account security settings.
If you ever signed in to Dropbox with a Lenovo ID, open the account activity log and read the August 4-21, 2026 window specifically: look for sign-ins you did not make, and for files opened, downloaded or shared in those days. Dropbox has disabled that sign-in route, so there is nothing left to disconnect - only to check.
Revoke unknown linked apps and devices; delete shared links you did not create.
Enable two-step verification with an authenticator app and save backup codes. Every account taken in the Lenovo ID incident was one without it.
Review the account activity log and recover/restore any files the attacker deleted.
What trips people up with Dropbox
- Two different doors, and the 2026 one skipped the password entirely. The old Dropbox breach is still why reused passwords open accounts, so a unique one remains the baseline - but the August 2026 hijacks came in through the legacy Lenovo ID sign-in, which never asked for a Dropbox password at all. If you ever linked a Lenovo account to this address, a strong password tells you nothing about whether you were affected; the activity log for August 4-21 does.
- Linked apps are the persistence trick: revoke unknown connected apps, because they survive a password change and keep working long after you think you have locked the intruder out.
- Check the Events/activity page: an attacker who accessed your files may have created shared links to exfiltrate data even after you lock them out. Kill unfamiliar shared links.
Still logged in? Lock the account down now
If you can still get in, you're racing the attacker. In this order: change the password to a long, unique one; sign out all other sessions/devices (the setting exists in Dropbox's security settings); confirm the recovery email and phone number are yours (attackers quietly add their own so they can "recover" the account later); remove unfamiliar linked apps or API access; and turn on two-factor authentication. Only then deal with anything the attacker posted, sent or bought.
Locked out of Dropbox — email or phone was changed
This is the worst-case scenario and the most common complaint: the attacker changed the account email, phone number or password so the normal reset flow emails them, not you. Do NOT keep triggering password resets — they go to the hacker. Go straight to Dropbox's dedicated recovery flow (link above), which is built for exactly this case: it verifies you by your original signup details, previous passwords, linked devices or a government ID / selfie check, bypassing the stolen email. Watch for the security notice Dropbox sent to your OLD email when the address was changed — it usually contains a "revert this change" link that works for a limited time and is the fastest way back in.
Got a "new login" alert from Dropbox?
Treat it as real but verify it the safe way: never tap the link in the message itself (fake login alerts are a top phishing template for Dropbox). Open the app or type the address yourself, check the active-sessions list in security settings, and if you see a device or location you don't recognize, sign it out and change your password immediately. If the alert was genuine, that password is burned — assume it's circulating and change it everywhere else you reused it.
Lost your 2FA device or codes
If you changed phones or lost access to your authenticator, use the backup codes you saved when enabling 2FA — that's exactly what they're for. No backup codes? Dropbox's account-recovery flow (link above) can verify you through other signals — original signup details, linked email, purchase history or ID verification — but it's deliberately slow, since the same door would otherwise let attackers in. Start the process immediately and respond fast to any follow-up; recovery requests that go quiet get closed.
Why this happened — and how to make sure it can’t again
About a third of account takeovers are credential stuffing: a password you used on Dropbox (or the email behind it) leaked in some other company’s breach, and attackers replayed it here automatically. The FBI’s IC3 logged over 5,100 account-takeover complaints with $262M in losses in 2025 alone (IC3). Dropbox itself has appeared in known breach data — see the Dropbox exposure for what leaked and when.
So after recovery, check what’s already out there: our free scanner shows which known breaches and dark-web dumps include your email — and whether passwords were exposed with it.
Check my exposure — free →After you recover: three doors to close
- Unique password + 2FA. A password manager plus app-based two-factor stops both stuffing and phishing replays.
- Reset everywhere you reused that password — email first (it’s the master key), then bank, then the rest.
- Shrink your public footprint. Attackers research targets on data-broker sites (your address, phone, relatives — enough to social-engineer support lines). Our free opt-out guide covers 190 of them, step by step.
Hacked Dropbox account, answered
How did my Dropbox account get hacked?
The most common cause isn't a hack of Dropbox itself — it's credential stuffing: a password you used on Dropbox leaked from some other site's breach, and attackers tried it here automatically. Roughly a third of account takeovers happen this way, with phishing (fake Dropbox login pages and alerts) close behind. That's why the first fix is a unique password, not just a new one.
Can I get my Dropbox account back?
Usually yes. Use the official recovery flow (https://help.dropbox.com/accounts-billing/security) — it can verify you even when the attacker changed the email and password. Be patient and respond quickly to follow-ups so the case stays open.
Should I just make a new Dropbox account instead?
Not until you've tried recovery. The old account keeps your history and contacts — and while the attacker controls it, it will be used to scam people who trust you. Recover it, or at minimum report it as compromised so Dropbox can lock it, before you start over.
Was Dropbox hacked in 2026?
Dropbox's own systems were not broken into. Around 5,000 accounts were opened between August 4 and 21, 2026 through a legacy Lenovo ID sign-in that did not verify who owned an email address, which let someone register a Lenovo account against your address and walk in without your password. Dropbox ended those sessions and switched the integration off.
Do I need to change my Dropbox password after the Lenovo ID incident?
A reset does not undo this one, because the route in never touched your Dropbox password and has since been shut off. Change it anyway if you reuse it elsewhere, then do the two things that actually matter here: read the account activity for August 4-21, 2026, and turn on two-step verification, which every hijacked account was missing.
How do I know if my Dropbox files were downloaded?
The account activity log lists sign-ins, file views, downloads and newly created shared links with dates, so it is the only record that answers this. Files were viewed or downloaded in fewer than a third of the affected accounts, meaning most were opened and nothing was taken. Dropbox emailed the people it identified as affected.
How do I stop my Dropbox account being hacked again?
Three things close most of the doors: a unique password (a manager makes this painless), app-based two-factor authentication, and shrinking your exposed footprint — checking your email against known breach databases and removing your personal data from data-broker sites that attackers use to research targets.