An illustration picture taken on April 26, 2018 in Paris shows the logo of social network Facebook displayed on a screen and reflected on a tablet.

ByKassy Dillon

On Friday, Facebook announced that a hacker gained access to nearly 50 million accounts from exploiting a technical vulnerability. This may be the most significant cyberattack on Facebook ever, according to Business Insider. It is still unclear if the accounts were misused.

On his personal Facebook, CEO Mark Zuckerberg claimed the issue was “patched” last night and that they are “taking precautionary measures for those who might have been affected.”

40 million people or more were logged out of their accounts on Friday as a precautionary measure if they used the “View As” feature “since the vulnerability was introduced,” Zuckerberg explained.

“We face constant attacks from people who want to take over accounts or steal information around the world,” Zuckerberg wrote. “While I’m glad we found this, fixed the vulnerability, and secured the accounts that may be at risk, the reality is we need to continue developing new tools to prevent this from happening in the first place.”

Even though Facebook has fixed the issue, here are four ways you can further protect yourself:

  1. Change your passwords. Changing your password is one of the most simple things you can do in a situation like this. But to be even safer, it is best to make sure your password for each website is different, long, and complex.
  2. Turn on two-factor authentication. Facebook offers a security feature called “two-factor authentication” that requires a user to enter a unique code sent to your cell phone before logging in. This is one of the safest ways to ensure your account is protected because even if someone gains access to your password, you’re still the only one with your phone.
  3. Audit Your Devices. On Facebook’s “Security and Login” page, there is a section labeled “Where You’re Logged In” that allows you to see which devices your account is logged in on and where those devices are located. If you see a suspicious device, there is an option to log out.
  4. Be Careful What You Put Online. Everything you put on the internet is public regardless of which privacy settings you select on your various social media accounts. This includes private messages. To ensure that your information is secure, avoid communicating or posting sensitive information on any social media platform.