I would definitely contact facebook and google. they got in using them. if the have access to your email, I would shut that email down, but that is how they get your email. When you get you computrer working, I would change every pw I have for everything. I keep mine written down in a small real notebook, not on the computer.

Take your computer to a professional and get them to fix it. I do not know your amount of knowledge. i have a computer systems degree, but it is from 1999. Basics are the same, but if you cannot get to system restore and find a point where your computer was alright, it is very difficult to do it. yourself.

First before doig anything else, download some software to look for malware, and in partivular a key loger. I'd use more than one software program to look for malware. You may hve picked it up via the original yahoo account.

I've changed my email passwords to be really long after my email was hacked (more than once), using both lower and upper case as well as numbers.

I do use Facebook as a "cloud" for photos, but there is nothign there I couldn't live without. I also keep a flash drive pugged into my computer to back things up, as well as ohn my hard drive.

I once deleted my FB account because I ws spendign too much time there. I brought up a new accoutn later on, when my friends complained about my not being on FB. When I tried to open the new account, it questioned my identity. It took a cople of weeks to establish that i was who i said i was. So, if you shut it down, be prepared for that, and make the new accout more secure by providign less personal and contact info.

Alert FB and appropriate authorities abotu yoru problems, and also give them the number from which you were texted.

Swtich from Yahoo to Gmail. Use very long and complicted passwords.

Personally, I dont' use my phone for social networking, emails or any kinds of purchases. Part of that is because I am partilly blind an dpart of it is that I feel more secure in not doing so.

I recently got RFID blockign sleeves for my credit can bank cards, because someone mysteriously got one of my account numbers. Do this to prevent future problems for yourself.

Read everyone else's advice, as someone here may think of something else.

It is all part of the mass hacking that just hit the news. Facebook, allowed the Trump people, via a shell outfit to hack over 500 thousand facebook people, With this information they follow your "likes", and your friends and then find where all of you shop, how you vote and where you want to be in the future. It is now being stated the the hackers know you better than people at work or family.

Use LastPass. Use the password generator to change all your passwords to the longest, most complicated passwords each site will accept.

If you can’t live with it, download your pictures and start a new account. It’s always good to change passwords periodically. My ex wife had all of my passwords so I had to make ones that she would not guess. It’s a PITA.

Btw, Ihad similar security before. Friends of friends only. Fb not very secure

Had my FB hacked. Now use process described by prior responent. Two step verification. Have my sister and niece as backup just in case I forget or lose verification code. They can authorize new one.

Be sure to tell your backup, if you chose one, to expect a non FB contact to confirm code. My hacker tried to get one. Luckily, my niece texted me.
Good luck.

1: Log in to Facebook.
2: Enable two factor authentication.
3: Find the "Log out of all devices" function. This will log-out your account from any device it is logged-in
4: Log out of Facebook.

After that, when you next login to Facebook with two factor authentication:
1: Facebook will send a code to your smartphone
2: You'll need to enter that code on Facebook to complete the log-in process.
3: No one can log-in to your Facebook without that code.