All Breaches
April 19, 2016 Verified Sensitive Record Social media

17 Data Breach

The 2016 breach of the 17 live-streaming app is a dataset a public breach source catalogues as 4,009,640 accounts with a structured date of April 19, 2016.

4 Million
Reported Records
5
Data Types
Critical
Severity
Jul 29, 2026
Last updated

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Exposed Data Types

5
  • Device information
  • Email addresses
  • IP addresses
  • Passwords with unresolved representation
  • Usernames

About This Breach

Reported fields are device information, emails, IP addresses, passwords, and usernames. The structured dataset date does not by itself prove the initial-access day.

The local record measure is 3,900,957, a difference of 108,683 from the external account measure. Neither figure means unique people, active creators or viewers, or accounts containing every field together. “Device information” also does not mean a device was compromised, contained malware, or had its physical location established.

A row establishes only actual fields in the attributed dataset. It does not establish identity, an active 17 account, creator or viewer role, content or revenue, device or IP ownership and location, password ownership or currentness, field co-occurrence, account takeover, or misuse.

If the password field is authenticated and the old password was reused elsewhere, it should be replaced. Device, IP, username, and account associations must remain private, and correct profile or device details are not enough to authenticate a sender.

Verification and editorial method

LeakData compares the incident name, date, affected-record count, and exposed data types with accessible sources. Unverified fields are not presented as facts, and records are updated when new evidence becomes available.

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