The Customer Security Assurance organization has been established to ensure a safe and secure online experience for Comcast customers. This team is a dedicated group of security professionals who respond to issues pertaining to phishing, spam, infected computers (commonly referred to as
bots), online fraud and other security issues.
*After Hours Emergency: If you are a law enforcement agent seeking immediate assistance due to imminent loss of life or serious bodily injury, please contact the Comcast Security Response Center (24x7) at 1-877-249-7306.
Child pornography is illegal, and any use of Xfinity services in connection with this material violates the Xfinity Acceptable Use Policy and Terms of Service. If you believe you have encountered photographs, videos, or other content online that contains child pornography, please report the issue to the National Center for Missing & Exploited Children at www.cybertipline.com.
Contact your local law enforcement immediately and file a report to ensure your physical safety.
Please document the incident by collecting information that can support an investigation.
If you believe Comcast can assist in your harassment investigation, send an email to email@example.com with the subject line "Harassment Investigation" and attach all evidence you can provide us to support in the investigation.
While Comcast Customer Security Assurance may be able to assist, you will be required to contact your local law enforcement agency if you are interested in pursuing legal action, including the identification of a Comcast customer.
The child should first be instructed to tell a trusted adult about the event and then report the issue to the National Center for Missing & Exploited Children at: www.cybertipline.com
When reporting spam emails, it is critical that you send us the email headers. Please do not forward the spam email. Forwarding the email will remove the original headers.
Email Client Users (Windows Mail, Outlook, Thunderbird, etc.)
If an email is unable to be delivered to a Comcast.net email address, it's possible the sender's email provider is blocking your address as an antispam precaution for Comcast customers.
The sender should receive an error message containing a link to a FAQ with valuable information regarding the issue and steps necessary to request removal.
Email administrators can submit the blocked IP address to the Comcast Security Assurance department to determine if the IP address is eligible for removal by completing the Blocked Provider Request Form. Requests submitted through this form are reviewed on a 24x7 basis.
When reporting phishing emails, it is critical that you send us the email headers. Please do not forward the phishing email. Forwarding the email will remove the original headers.
You can protect your email accounts from hackers and other threats. Constant Guard from Xfinity makes it easy, no matter what email program you use, including webmail.
Did you know hackers can use your computer to send spam without your knowledge? You can help deter hackers and ensure your email is delivered by following the steps outlined below.
To help protect your computer, please visit our Xfinity Connect help page for instructions on how to securely configure your email client program. In accordance with industry recommendations, Comcast recommends the sending of email on port 587 with authentication or port 465 with authentication over SSL as secure alternates to port 25, which is the default for many older email clients. If you are configured to use a server other than smtp.comcast.net, please contact your mail provider for alternate secure port settings.
If you are a webmail user and use a browser to access your email, you don't need to do anything. However, it is always important to check for and remove any possible viruses from your computer. This can be done by using Norton™ Security Suite for PC (Mac users click here) available from Comcast or by using other popular antivirus solutions that are widely available. Norton™ Security Suite is included at no additional cost with your Xfinity Internet service.
Firewall logs should be sent to the Internet Service Provider who controls the network associated with the IP address attempting to connect to your computer.
For real-time alerts related to your online security, visit our Alerts page.