Emerging Cyberthreats | Norton Internet Security Center
Yahoo announces data breach affecting 500 million users

Authored by a NortonLifeLock employee
If you have a Yahoo account, you need to change your password now. If you reuse that password on any other online accounts, you should change that too.


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Yahoo announced on Thursday September 22nd that they have been the victim of a substantial cyber attack that occurred in 2014, which stole information associated with 500 million accounts. Yahoo is currently working with law enforcement to determine the source of the attack.
The specifics of what was stolen have not been released yet, however the company believes that the data could possibly contain usernames, email addresses, birth dates, and more.
How To Protect Your Accounts:
In situations like this, we cannot stress enough the importance of using safe and secure and passwords.
- Here are some tips on creating a secure password:
- Use a random combination of symbols, letters, and numbers.
- Don’t use the same password for multiple websites. Ever.
- Don’t use words in your passwords- cybercriminals have programs that can crack those passwords in a heartbeat.
- Don’t use any personal information in your password- not even your birthdate.
- Do not open emails from unknown sources and delete anything that appears questionable.
- Do not rely on security questions to protect your account/password. Most security questions are common across applications, and the answers are often found on public social media sites.
We understand that it can be hard to keep track of dozens of complicated passwords for multiple websites; however, cybercriminals count on password reuse in order to gain access to other accounts. One way to get around the annoyance of having to remember all of those unique passwords is using a secure password manager, such as Norton Identity Safe.
Another great way to protect your account is if the service offers two-step verification. You can turn it on for your Yahoo account here.
Two-step verification is a method of verifying your identity in addition to your username and password. Two-factor authentication asks you to provide one of the following things:
- Something you know – a pin number, password or pattern.
- Something you have – an ATM or credit card, mobile phone or security token such as a key fob or USB token.
- Something you are – Biometric authentication such as a voiceprint or fingerprint.


Today’s attacks are multi-pronged. That’s why you need a layered approach to security.
Norton software blocks web-based attacks at the network level, before they ever reach your PC.
Now you can help protect against malware with Norton AntiVirus Basic.

Disclaimers and references:
NortonLifeLock Inc. is a global leader in consumer Cyber Safety. We are dedicated to helping secure the devices, identities, online privacy, and home and family needs of more than 50 million consumers, providing them with a trusted ally in a complex digital world.
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