
As these scams get more sophisticated, it can be tough knowing whether an email is real or fake.
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Such emails typically look as though they come from a legitimate organization and may contain links to what appears to be that organization's site (e.g., package delivery, payroll, IRS, social networking), but is actually a fake site or attachment designed to install malware and capture information. Phishing scams use fraudulent emails to get users to reveal confidential information. Fortunately, you don’t need to be a security expert to help stop malware. Most cyber attacks use malware (malicious software) to infect a computer with malicious code designed to steal passwords, data, or disrupt an entire computer/network. Salesforce highly recommends phishing education for all Salesforce users.

Additionally, this allows you to follow our best practices of not specifying instance names in code and integrations (e.g. Having a custom domain lets you highlight your brand and makes your org more secure. My Domain allows you to add a custom domain to your Salesforce org URL.
