What can my hosting provider do to help protect clients against email spoofing?

If in doubt delete.

What can my hosting provider do to help protect clients against email spoofing?

Email Spoofing is when a threat actor forges email headers so the receiver’s client software displays a fraudulent email address, taking advantage of email headers’ trust factors, that most end users are unaware that email headers can be forged and take it as trusted and legitimate.

Quick tips in spotting spoofing:
The sender and receiver email addresses are the same.
Threats of account closures.
Time limitation threats like act now before your account is closed.
Poor Spelling and Grammar. Not so relevant anymore as scammers are now a lot more professional as seen in cloning emails of PayPal.

Email spoofing is an original way for spammers to get around email filters, today it is a global cybersecurity crisis with 3.1 billion domain spoofing emails sent per day, bearing in mind 90% of cyber-attacks start with an email message. Email spoofing hides the sender’s ID, helps get around blocklists and spam filters, and tricks you into believing the email is from a legitimate source. Security protocols were introduced to reduce email spoofing, redirecting spoofed email messages to user spam boxes. Scammers program scripts so to add their own senders’ email address of choice in the headers whether the email address is real or not, utilizing Email API endpoints, thereby by-passing protocols. Email is sent using Simple Mail Transfer Protocol (SMTP), first via the outgoing server, the receiver’s domain is identified and the spoofed email is routed to the domain’s email server, then the recipient’s email server routes the spoofed message to the right user inbox.

Email spoofing & hosting
Spoofing email as plaint text

Other tools Hosting companies can provide to reduce spoofing.

Sender Policy Framework (SPF) is an email authentication method to detect spoofed email headers by whitelisting IP addresses that can send emails for the domain. Email servers perform an SPF lookup and then reject the mismatched email as spam. Email servers execute an SPF lookup preventing spammers from using spoofed domains in the email envelope.

DKIM (DomainKeys Identified Mail), is an email authentication method to detect spoofed sender addresses by cryptographically signing sent emails with a signature for the organisational level corresponding to a public key is published to the DNS records. The email is sent and DKIM (DomainKeys Identified Mail) makes sure the email is not altered on the pathway between sending and receiving.

Domain-based Message Authentication Reporting & Conformance (DMARC) is an email security protocol. DMARC verifies email senders by combining Domain Name System (DNS), DomainKeys Identified Mail (DKIM), and Sender Policy Framework (SPF) protocols. DMARC requires DKIM or SPF to be in place on an email domain and a DMARC record to be published in the DNS. DMARC enforces an alignment MAIL FROM and the sender and enables the email domain’s policy to be shared and authenticated after the DKIM and SPF status has been checked.

Spoofing is a method of delivery; Phishing is a method of retrieval.

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