Email Security
What Is Email Quarantine and How Does It Work?
Learn why suspicious or high-risk emails may be isolated instead of delivered directly to a mailbox and how quarantine helps improve email...
Email Security
How Are Malicious Email Attachments Detected?
Learn why email attachments can create security risks, how attackers disguise malicious files, and how users should handle unexpected documents.
Email Security
What Is Email Spoofing and How Are Sender Addresses Faked?
Learn what email spoofing is, why attackers imitate trusted sender identities, and how SPF, DKIM and DMARC can reduce domain impersonation risks.
Email Security
What Is Business Email Compromise (BEC)?
Learn how BEC attacks impersonate executives, suppliers and employees to request payments or sensitive information and why these attacks can be difficult...
Email Security
What Is a Brute Force Attack Against Email Accounts?
Learn how automated password-guessing attacks target email accounts, how failed-login patterns can reveal attacks, and which controls help reduce risk.
Email Security
Why Do We Receive Spam Emails and How Do Spammers Find Addresses?
Learn how spammers discover email addresses, how mailing lists are built and what businesses can do to reduce unwanted email traffic.
Email Security
How to Secure Business Email: Essential Protection Steps
Learn the essential measures companies can use to protect business email against phishing, malicious content, spam and account takeover attempts.
Email Security
How to Identify a Phishing Email: 10 Warning Signs
Learn how to recognize phishing emails by checking sender addresses, links, urgent requests, unexpected attachments and other warning signs.
Email Security
What to Do If a Business Email Account Is Compromised
Follow these important steps if you suspect a business email account has been compromised, including password changes, forwarding checks and access review.
Email Security
How to Create a Strong Password for Business Email
Learn the essential rules for creating strong, unique and difficult-to-guess passwords for professional business email accounts.