I couldn't find any information about a social network called Linked2us. It's possible it's a smaller platform or one that has recently changed its name.

If you're concerned about privacy on social media in general, here are some tips:

 * Review the privacy settings of any social media platforms you use and adjust them to your comfort level.

 * Be mindful of what information you share publicly.

 * Be cautious about clicking on links or downloading attachments from unknown senders.