Yahoo's largest ever 500 million people leaked out, attacks by former government hackers and official announcement

Provide Internet related services such as search engines and e-mails in August 2016200 million Yahoo user information leaked onto "Dark Web"It was reported that Yahoo's in-house survey officially announced that more than 500 million user account information was stolen in 2014 from its database.

An Important Message About Yahoo User Security | Yahoo
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According to Yahoo's announcement, the leaked 500 million user account information is the name, mail address, address, phone number, birth date, hashed password (mostlyBlowfish· Encrypted or unencrypted security questions and security answers are included, but the credit card information and bank account information are not included. It is believed that this data was extracted by "nation-supported hacker group."

Yahoo has sent notifications to potentially affected users to guide you through procedures to change passwords and security questions and answers. Also, we recommend that you change to a new password for users who have not changed their password even after 2014. Yahoo checks the user for suspicious activity online, and if there is any suspicious activity, in addition to Yahoo, it is necessary to use the same password and security question and answer of other service account We urge you to change your password and security information.

In addition, Yahoo can encrypt the password of each company's service and manage it centrallyYahoo Account KeyYou are asking users to use. Although Yahoo is continuing in-house surveys, it has been confirmed that hacker groups are not already in Yahoo's network. Yahoo says it will work with legal institutions and proceed with the investigation.