Social media such as Facebook, Twitter, Instagram, Snapchat, etc. are generally not secure.
IT criminals look for entrances to the vital IT systems of organisations, and they often use social media to gain access. For instance, they gain access when people share information that can be misused.
Therefore, consider carefully what information you share on social media about yourself and about AU.
Social media are often exposed to hacker attacks, and if IT criminals get access, they can steal sensitive personal data.