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“Contains emails, usernames, full names and other account info.

15,115,516 unique lines,” the ad stated.

Trello

However, this might not be entirely correct.

Emo toldBleepingComputerthat they used a publicly exposed API to link email addresses to public Trello profiles.

The API was publicly accessible, the hacker added.

Now, it requires users to sign in, but a free account will suffice.

Knowing that Trello is a project management board used mostly by professionals only makes it more dangerous.

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