The security and privacy settings at these third party companies require you to login again every 90 days, which means you'll have to relink Newsroom to your account at the same time when this security token expires.
If you try to publish news to a social media account where the security token has expired and you've been logged out, we'll send you a friendly reminder email to let you know that you'll just need to hop in and log on again to re-establish the connection between the two services.