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Two-Factor Authentication: What is It and How Does it Work?

By
Services for Real Estate Pros with IDTheftSecurity.com Inc

There are many ways that you can protect yourself on the internet, and one of the things you can do is begin using two-factor authentication.

You have likely seen two-factor authentication even if you don’t totally know what it is. For example, if you do your banking online, your bank might send a code to you via text or email. Or when you try to change your password you might receive some form of a confirmation to make sure it’s you. This is exactly what two-factor authentication is…it’s an extra step you take that confirms you own the account. This makes it harder for a criminal hacker to get into your account. Not only does a hacker need a password to get into the account, but with two-factor authentication, they also need access to your email account, a keyfob or your smart phone.

Sites That Have Two-Factor Authentication

Most major websites offer two-factor authentication. You can find help setting these up, below:

Apple ID

You can set up two-factor authentication on your iPhone, iCloud, or iPad:

  • Click “Settings,” “Security,” and finally choose “Turn on two-factor authentication.”
  • Enter your phone number
  • Check your texts, and then enter the code. That’s it.

Facebook

  • Log into your Facebook account and then click “Settings” before clicking “Security and Login.”
  • Click on “Use two-factor authentication,” and then click on “edit.”
  • Choose the method. There are a number of options including apps, texts, and code generators.
  • Instructions will appear on screens
  • Click on “Enable.”

Gmail

You can also set up two-factor authentication for Google accounts, including Gmail.

  • Navigate to Google. Here, you can find two-factor authentication.
  • Click on “Get started.”
  • Follow the instructions that appear on screen to turn the feature on.

Yahoo

  • Sign into your Yahoo account
  • Click on “Account security.”
  • Check to make sure “two-step verification” is clicked to “On.”
  • Type in your phone number and choose phone call or text message
  • Input the code, and then click “Verify.”

Instagram

If you have an Instagram account, you can also set up two-factor authentication:

  • Log into your Instagram account.
  • Go to your profile and click on the operating system you use.
  • Scroll down until the “two-factor authentication” option appears.
  • Click “Require security code.”
  • Insert your phone number, and then click “Next.”
  • A code will be sent to your phone. Put it into Instagram, and then click “Next.”

Twitter

If you have Twitter, you can use two-factor authentication, too, but there are different steps to take depending on how you get onto your account. For instance, it’s different on a laptop when compared to an iPhone. You can check out the Help Center to learn more about seeing up two-factor authentication.

Here are some more sites that allow two-factor authentication. Click on the links for more information:

Amazon

Ebay

Linkedin

Paypal

With billions of records stolen, it is likely a criminal not only has your username for various accounts, which is often a simple email address, but they also might have your pass code for various accounts. Currently, the only real and true way to keep them out is with two factor authentication. And while some will debate that two factor authentication is far from full proof, it really is the best option that is easy to use and offers a comprehensive layer of defense.

Written by Robert Siciliano, CEO of Credit Parent, Head of Training & Security Awareness Expert at Protect Now, #1 Best Selling Amazon author, Media Personality & Architect of CSI Protection Certification.

Nina Hollander, Broker
Coldwell Banker Realty - Charlotte, NC
Your Greater Charlotte Realtor

I have two-factor identification on my Facebook account, but not on other social media. Will have to give it some serious thought.

Apr 28, 2021 09:20 AM
Kathy Streib
Cypress, TX
Home Stager/Redesign

Hi Robert- I have and appreciate two-factor authentication on some of my sites and am thinking about adding it for some of my others. I don't mind the extra time it takes for me to receive a text to confirm my ID. 

Apr 28, 2021 06:01 PM
Kathy Streib
Cypress, TX
Home Stager/Redesign

May 01, 2021 06:40 PM
Grant Schneider
Performance Development Strategies - Armonk, NY
Your Coach Helping You Create Successful Outcomes

Hi Robert - at Fordham University where I am an adjunct, they have something called Duo where you say on the site send me a push.  Then it pops up on your phone to approve.

May 02, 2021 04:27 AM
Fred Griffin Florida Real Estate
Fred Griffin Real Estate - Tallahassee, FL
Licensed Florida Real Estate Broker

Thank you, Robert.  I use two-factor for my banks, online orders, credit cards, etc.  

May 02, 2021 05:50 PM
Lyn Sims
Schaumburg, IL
Real Estate Broker Retired

I just heard about another 3rd type where you buy a device for authentication. I opted for the Google one.

May 03, 2021 11:19 AM
Jeff Dowler, CRS
eXp Realty of California, Inc. - Carlsbad, CA
The Southern California Relocation Dude

Great advice and information, Robert. I use 2-Factor authentication on a number of accounts/site but I need to broaden my usage.

May 05, 2021 04:00 PM
Kristin Johnston - REALTOR®
RE/MAX Platinum - Waukesha, WI
Giving Back With Each Home Sold!

Great information.  Thanks for sharing and have a wonderful day!

Jun 13, 2021 07:15 AM
Barbara Roughers

How does radius two-factor authentication work? When you connect to the VPN, both of the two factor sets of information will be transmitted to the remote server. This way, if there is someone in the remote country trying to access your account, then he or she will only be able to do so if the originating IP address from the VPN server is stronger than the IP address of the local computer. In other words, the local computer will need to have a stronger IP address in order to establish a connection with the VPN.

Jul 31, 2021 10:32 AM