Re: Spoofed From: names

2020-04-11 Thread RW
On Sat, 11 Apr 2020 15:16:35 -0400 Rick Cooper wrote: > On April 11, 2020 3:08:15 PM EDT, RW > wrote: > >On Sat, 11 Apr 2020 19:58:02 +0100 > >RW wrote: > > > > > >> > >> The first one was cited as a format used in forwarded ham. The > >> other two are common in spam. > >> > >> The point of

Re: Spoofed From: names

2020-04-11 Thread Rick Cooper
On April 11, 2020 3:08:15 PM EDT, RW wrote: >On Sat, 11 Apr 2020 19:58:02 +0100 >RW wrote: > > >> >> The first one was cited as a format used in forwarded ham. The other >> two are common in spam. >> >> The point of this spamming technique is that many clients show only >> the display name

Re: Spoofed From: names

2020-04-11 Thread RW
On Sat, 11 Apr 2020 19:58:02 +0100 RW wrote: > > The first one was cited as a format used in forwarded ham. The other > two are common in spam. > > The point of this spamming technique is that many clients show only > the display name in the message list. Consequently the three headers > will

Re: Spoofed From: names

2020-04-11 Thread RW
On Sat, 11 Apr 2020 11:46:04 -0600 Grant Taylor wrote: > On 4/11/20 9:49 AM, RW wrote: > > I see that the plugin rules don't distinguish between the > > irresponsible format of: > > > >From: "Mr Bill (mb...@legitemail.com)" > > > > > > and more seriously deceptive formats like: > > > >

RE: Spoofed From: names

2020-04-11 Thread Rick Cooper
Grant Taylor wrote: > On 4/11/20 9:49 AM, RW wrote: >> I see that the plugin rules don't distinguish between the >> irresponsible format of: >> >>From: "Mr Bill (mb...@legitemail.com)" >> >> >> and more seriously deceptive formats like: >> >>From: "mb...@legitemail.com" >>From:

Re: Spoofed From: names

2020-04-11 Thread Grant Taylor
On 4/11/20 9:49 AM, RW wrote: I see that the plugin rules don't distinguish between the irresponsible format of: From: "Mr Bill (mb...@legitemail.com)" and more seriously deceptive formats like: From: "mb...@legitemail.com" From: "Mr Bill " I feel like all three examples that

Re: Spoofed From: names

2020-04-11 Thread Pedro David Marco
To my remember, (as Grant, i need  my caffeine truck as well)  there are some MS Outlook CVEs related to the wayMS Outlook shows the "From:"  information, to the extent of showing just some "piece" of it... So this kinf of "From:"  may have significant impact on unpatched computers...

Re: Spoofed From: names

2020-04-11 Thread RW
On Thu, 9 Apr 2020 16:17:51 -0400 Kevin A. McGrail wrote: > On 4/9/2020 10:16 AM, micah anderson wrote: > > What is the current state of the art for dealing with tricking > > people in the From with the "Name" part? For example: > Hi Micah, I believe the FromNameSpoof plugin is the current

Re: Spoofed From: names

2020-04-09 Thread Kevin A. McGrail
On 4/9/2020 10:16 AM, micah anderson wrote: > What is the current state of the art for dealing with tricking people in > the From with the "Name" part? For example: Hi Micah, I believe the FromNameSpoof plugin is the current state of the art. -- Kevin A. McGrail kmcgr...@apache.org Member,

Re: Spoofed From: names

2020-04-09 Thread Grant Taylor
On 4/9/20 10:12 AM, Lindsay Haisley wrote: I don't know. I'm no SA expert, but I've worked with DMARC mitigation code and would assume that a RFC-2822 compliant understanding of the From address would be the first step. More caffeine and a little more Googling, I think that SpamAssassin

Re: Spoofed From: names

2020-04-09 Thread Grant Taylor
On 4/9/20 9:19 AM, Grant Taylor wrote: Would you be willing to rephrase your paragraph hilighting which addresses you are comparing when? Thank you for the off-list reply Rick. I know understand that you are referring to the simple cases where the human friendly name is abused to look like

Re: Spoofed From: names

2020-04-09 Thread Lindsay Haisley
On Thu, 2020-04-09 at 10:02 -0600, Grant Taylor wrote: > Please elaborate > on what else SpamAssassin needs to know about and do. I don't know. I'm no SA expert, but I've worked with DMARC mitigation code and would assume that a RFC-2822 compliant understanding of the >From address would be the

Re: Spoofed From: names

2020-04-09 Thread Grant Taylor
On 4/9/20 9:33 AM, Lindsay Haisley wrote: This is actually a common, legitimate technique for dealing with DMARC mitigation issues on mailing lists and mail redirections. Yes, re-writing the From: address is a common technique. How it's re-written is important. (See below.) I don't know

Re: Spoofed From: names

2020-04-09 Thread Lindsay Haisley
On Thu, 2020-04-09 at 10:47 -0400, Rick Cooper wrote: > I wrote my own plugin for that but I don't score very high anymore because > of things likes this: > (obviously Mr Bill is not real but the netsuite address is) > > From: "Mr Bill (mb...@legitemail.com)" > > I find more and more

Re: Spoofed From: names

2020-04-09 Thread Grant Taylor
On 4/9/20 8:47 AM, Rick Cooper wrote: For detecting possible fraud addresses involving our own people I wrote a backend look up for exim that looks at any name like "Rick Cooper" and compares that to a DB with all email addresses for all employees in all locations and then , if the actual

RE: Spoofed From: names

2020-04-09 Thread Rick Cooper
ddresses that person may have. It also adds a X-Header that SA can score on at the same time. Rick -Original Message- From: micah anderson [mailto:mi...@riseup.net] Sent: Thursday, April 09, 2020 10:17 AM To: users@spamassassin.apache.org Subject: Spoofed From: names Hi, What

Spoofed From: names

2020-04-09 Thread micah anderson
Hi, What is the current state of the art for dealing with tricking people in the From with the "Name" part? For example: From: "supp...@example.com" The "Real Name" part is used to put a fake email address of the actual domain (example.com would be my domain, or gmail.com or something other