Storing passwords in plaintext online is never a good idea, but it’s remarkable how many companies have employees who are doing just that using online collaboration tools like Trello.com. Last week, KrebsOnSecurity notified a host of companies that employees were using Trello to share passwords for sensitive internal resources. Among those put at risk by such activity included an insurance firm, a state government agency and ride-hailing service Uber.
By default, Trello boards for both enterprise and personal use are set to either private (requires a password to view the content) or team-visible only (approved members of the collaboration team can view).
But that doesn’t stop individual Trello users from manually sharing personal boards that include proprietary employer data, information that may be indexed by search engines and available to anyone with a Web browser. And unfortunately for organizations, far too many employees are posting sensitive internal passwords and other resources on their own personal Trello boards that are left open and exposed online.