Yep. They need to understand what it costs to have Brian Krebs call and interview them about their impressive shiny new breach.
Kurt On Sat, Oct 7, 2017 at 3:43 PM, Richard Stovall <[email protected]> wrote: > Massive potential pushback from mgmt on manual review. Just sayin'. > > On Fri, Oct 6, 2017 at 11:51 AM, Kurt Buff <[email protected]> wrote: >> >> Quarantine all PDFs for the time being, and manually review. >> >> Implement strict SPF checking - reject any that fail. >> >> Investigate implementing DMARC. >> >> Kurt >> >> On Fri, Oct 6, 2017 at 7:00 AM, Rimmel, Carl <[email protected]> wrote: >> > Yes, we use Proofpoint. It has done a great job and will quarantine >> > these messages once they get classified. We are dealing with very targeted >> > zero-day type PHISHing (our last round were messages composed to look like >> > they were sent by our CEO - with his signature and inline photo). The >> > payload was an attached PDF with the image having an embedded malicious >> > URL. >> > >> > -----Original Message----- >> > From: [email protected] >> > [mailto:[email protected]] On Behalf Of Kurt Buff >> > Sent: Thursday, October 05, 2017 11:18 AM >> > To: [email protected] >> > Subject: Re: [Exchange] PDF Spam >> > >> > No external spam filter? With quarantine? >> > >> > Kurt >> > >> > On Thu, Oct 5, 2017 at 7:55 AM, Rimmel, Carl <[email protected]> wrote: >> >> We have been seeing an uptick in SPAM containing PDF attachments. The >> >> PDFs are composed of a full-page image that, when moused-over, points >> >> to a malicious web site. We have tried to use Transport Rules to >> >> block these based on the moused-over URL but Exchange seems unable to >> >> properly detect these embedded URLs. We are able to use Transport >> >> Rules to block PDFs with plain text so we know that the server is >> >> inspecting them properly. >> >> >> >> >> >> >> >> Any ideas on how to battle these pesky messages? >> > >> > >> > >> > ________________________________ >> > >> > CONFIDENTIALITY NOTICE: This email contains information from the sender >> > that may be CONFIDENTIAL, LEGALLY PRIVILEGED, PROPRIETARY or otherwise >> > protected from disclosure. This email is intended for use only by the >> > person >> > or entity to whom it is addressed. If you are not the intended recipient, >> > any use, disclosure, copying, distribution, printing, or any action taken >> > in >> > reliance on the contents of this email, is strictly prohibited. If you >> > received this email in error, please contact the sending party by reply >> > email, delete the email from your computer system and shred any paper >> > copies. >> > >> > Note to Patients: There are a number of risks you should consider before >> > using e-mail to communicate with us. See our Privacy & Security page on >> > www.henryford.com for more detailed information as well as information >> > concerning MyChart, our new patient portal. If you do not believe that our >> > policy gives you the privacy and security protection you need, do not send >> > e-mail or Internet communications to us. >> >> >
