Account and Computer Security

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Account security is of the utmost importance to Blizzard Entertainment. We want to equip our players with the knowledge they need to ensure their accounts remain safe, secure, and in the right hands. Select your operating system below for helpful security tips.

Windows

The video below provides some useful tips for account security:

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  1. Always install the most current security and service packs. You can access the most current updates at any time by visiting the Microsoft Windows Update page. You can also turn on Automatic Updates.
  2. Most operating systems have a built-in firewall, such as Windows XP SP2 and newer editions of Windows. Search your operating system's documentation for "firewall" to learn more.
  3. While firewalls do provide added system security, they can also affect connections to our game servers. Review our Firewall Configuration steps for important settings to use with a firewall.
  4. Review our Security Software page for tips on Antivirus Software and Anti-Spyware Software.
  5. Just like game patches, web browser updates will bring new features (like a built-in phishing filter) and address previous security issues. To download the latest version of a new web browser or update your current web browser, visit the distributor's main website:
Advanced Troubleshooting
  1. Web browser phishing filters check the websites a user is visiting against a database of legitimate and phishing websites. Phishing filters will alert you if a website is a known phishing website, or poses a potential security risk. For most web browsers with a built-in phishing filter, the filter will be enabled by default. If you have disabled your web browser's phishing filter or do not know if your phishing filter is enabled, follow steps for your web browser (Chrome | FireFox | Internet Explorer | Opera | Safari).
  2. Due to their popularity, Adobe Flash Player and Adobe Reader are frequent targets for malware and get updated often by their manufacturer. Ensure you have installed the latest version of Adobe Flash Player and Adobe Reader.
  3. Create a unique email address. Avoid including any parts of your name, your date of birth, or other publicly available information. Once registered, keep this email address isolated by not using it for any other service besides Battle.net. This will increase the security of your account, and help reduce phishing emails sent to your Battle.net email address.

    Note: Whether you are using a unique email or your 'usual' email account, never use the same password for Battle.net.
  4. Make sure your email filters are set up properly.
  5. The Battle.net Authenticator is a mobile app or physical token that provides another layer of account security. Using a Battle.net Authenticator or the Mobile Authenticator application does not negate the importance of end-user system security -- it is an added layer of protection and should complement safe browsing habits and security practices.

Mac

The video below provides some useful tips for account security:

  1. Check for system and security updates and Apple security updates.
  2. Just like game patches, web browser updates will bring new features (like a built-in phishing filter) and address previous security issues. To download the latest version of a new web browser or update your current web browser, visit the distributor's main website:
  3. Web browser phishing filters check the websites a user is visiting against a database of legitimate and phishing websites. Phishing filters will alert you if a website is a known phishing website, or poses a potential security risk. For most web browsers with a built-in phishing filter, the filter is enabled by default. If you have disabled your web browser's phishing filter or do not know if your phishing filter is enabled, follow steps for your web browser (Chrome | FireFox | Internet Explorer | Opera | Safari).
  4. Due to their popularity, Adobe Flash Player and Adobe Reader are frequent targets for malware and get updated often by their manufacturer. Ensure you have installed the latest version of Adobe Flash Player and Adobe Reader.
Advanced Troubleshooting
  1. Create a unique email address. Avoid including any parts of your name, your date of birth, or other publicly available information. Once registered, keep this email address isolated by not using it for any other service besides Battle.net. This will increase the security of your account, and help reduce phishing emails sent to your Battle.net email address.

    Note: Whether you are using a unique email or your 'usual' email account, never use the same password for Battle.net.
  2. Make sure your email filters are set up properly.
  3. The Battle.net Authenticator is a mobile app or physical token that provides another layer of account security. Using a Battle.net Authenticator or the Mobile Authenticator application does not negate the importance of end-user system security -- it is an added layer of protection and should complement safe browsing habits and security practices.

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