A crazy thing is happening when I use Facebook

[Videomanmac]

Hi,

So, when I use Facebook on Safari on my 2015 MacBook Pro running 10.12.5, when I initially load Facebook and do a 2 finger scroll down, the screen (mainly the lower half) does a super quick flash of all of this matrix style green code with black background.

I have a suspicion someone is trailing me online after someone compromised my Facebook and blocked a specific friend I have no contact with on Facebook, but Snapchat and text with frequently. But, I know it's not possible because MacOS is so secure.

Any advice on this?

P.S.- Yes, I am not insane and I have all my marbles in tact.

 

[gsahli]

It wouldn't hurt to try Malwarebytes for Mac, to make sure there is no malware.

 

[Open Casket]

Seems like remote access.
Does this also happen when using Chrome and Firefox?

 

[Videomanmac]

It wouldn't hurt to try Malwarebytes for Mac, to make sure there is no malware.

I have, and it only came up with the installer for Flash.

Seems like remote access.
Does this also happen when using Chrome and Firefox?

I'm not sure, I haven't tried it, I only login using safari because all my passwords are stored in keychain and have 2FA so I really don't want to go through the hassle of it on chrome and Firefox

 

[Open Casket]

Does it happen on Facebook when you login using your phone?

 

[Videomanmac]

Does it happen on Facebook when you login using your phone?

No, the Facebook app works fine.