What mail server do you use? Exchange/Outlook will allow you to convert all html email to plaintext before the user receives it. It can be done at the client or the server. People will still be able to receive email from everyone, it's just that html email will be converted to plaintext before the user receives it. It doesn't adversely affect anyone. L *************************** Larry Whiteside Jr. Sr. Security Engineer -----Original Message----- From: Rob Shein [mailto:shotenat_private] Sent: Friday, May 23, 2003 2:34 PM To: Whiteside, Larry [contractor]; 'Matt LaFelero' Cc: incidentsat_private Subject: RE: Possible Intrusion Attempt? I'm a little fuzzy about this part...how do you prevent people from accepting HTML mail, and considering how many mail clients out there send it by default, what do you do when all of a sudden a large percentage of people can't email you anymore? -----Original Message----- From: Whiteside, Larry [contractor] [mailto:BAE14at_private] Sent: Thursday, May 22, 2003 3:31 PM To: Matt LaFelero Cc: incidentsat_private Subject: RE: Possible Intrusion Attempt? <snip> my 2 cents: You should first stop allowing HTML email. That is one of the easiest ways for arbitrary code to be executed on your host. Then you should revamp your security program to teach your users not to open things from unknown sources. As long as you allow HTML email, you can be subject to this type of attack. <snip> ---------------------------------------------------------------------------- *** Wireless LAN Policies for Security & Management - NEW White Paper *** Just like wired networks, wireless LANs require network security policies that are enforced to protect WLANs from known vulnerabilities and threats. Learn to design, implement and enforce WLAN security policies to lockdown enterprise WLANs. To get your FREE white paper visit us at: http://www.securityfocus.com/AirDefense-incidents ----------------------------------------------------------------------------
This archive was generated by hypermail 2b30 : Sun May 25 2003 - 21:56:11 PDT