Your accounts may be at risk.
Recently, a large collection of emails and passwords, dubbed 'Collection #1' have been found online. The collection has nearly 2.7 billion emails and passwords, and 773 million unique emails. Those are big numbers, so there's a very high chance one of your accounts may be caught up in this. If you use the same password for many accounts, and you sign up with the same email, just one leak can result in all of your accounts with the same email being at risk! You can read more here: https://www.troyhunt.com/the-773-million-record-collection-1-data-reach/
You can check if your email is at risk by plugging it into this website, which doesn't store emails and is risk free. It'll also give you some tips on how to keep your accounts secure if you are at risk: https://haveibeenpwned.com/
Make sure to change your passwords and use 2-Factor Authentication if any of your accounts are at risk.
Please pass on the message to your friends to make sure they can check their accounts!