Order Tray | Contact Us | Home | SIG Lists

[aprssig] Hacked eMAIL

Gregg Wonderly gregg at wonderly.org
Mon Mar 15 15:18:12 UTC 2010


EMAIL is not secure, easily spoofed as long as SMTP servers (outbound mail 
servers that you can send mail to) allow "relaying".  Many/Most ISPs of 
substance, do not do relaying (sending of mail from someone they do not know how 
to authenticate) any longer.  However, anyone on the internet can set up an SMTP 
server, and if the other SMTP servers don't have a list of "valid" servers that 
they will only talk to, then it's wide open still.

Never, ever trust an email that is not signed by some reasonable cryptographic 
means (This is why you see some PGP signed data, and CERT signs their emails 
etc) to be "authentic".

The Received-From: header lines in an email message are the place where 
"servers" will tell you what machine-name/ip-address they accepted a connection 
from, and how that machine identified itself (SMTP HELO etc).  That gives you a 
reasonable chance of "knowing" where it came from, but it's still possible to 
spoof even that information right up to the last "secured" server that your 
email passed through.

Gregg Wonderly
W5GGW

Erik Finskas wrote:
> To be true, to send email showing your name and address does not need 
> hacking of any kind. Anyone can do it. Just change the fields on the 
> email client.
> 
> To verify that they have been really sent using authenticating servers 
> or some other hacked way, read through the headers of a email which you 
> did not send and look for the servers and host relaying the mail.
> 
> Erik OH2LAK
> 
> ------- Original message -------
>> From: Matt a <projecthiker at yahoo.com>
>> To: anitra at entercom.com, aprssig at lists.tapr.org, aprssig at tapr.org, 
>> brars-owner at googlegroups.com, brarsreview at googlegroups.com, 
>> contest at wingworldmag.com, coordinators-request at emcomus.org, 
>> customercare at averatec.com, fairrisjunecaves at yahoo.com, 
>> greg at bigredbee.com, info at geosat.us, josua.george at gmail.com, 
>> ladyvolleyball at yahoo.com, pookie54 at charter.net, 
>> sar-aprs-subscribe at sbsar.org, swendelken at greenvillecounty.org, 
>> usgscatalog at usgs.gov, webmaster at upstaterose.com, 
>> wharfedalepro at iagpro.com, wpfp at yahoo.com, metricprecision56 at gmail.com, 
>> newslettersct at yahoo.com, angel at emediagrp.com, 
>> goddess_chylde at yahoo.com, bethm6404 at charter.net, tonkovicb at yahoo.com, 
>> bmork at cityofgreer.org, bmork at cityofgreer.org, wetrike at gmail.com, 
>> fan4dj88 at netzero.com, butchmak at gmail.com, cmlozano at bellsouth.net, 
>> startexfirelady at gmail.com, CarterT at usa.redcross.org, 
>> cartert at usa.redcross.org, ChapterT at charter.net, gwrra.sc.t at gmail.com, 
>> cpeder at usgs.gov, bakersmopar at yahoo.com, clyde-alex at hotmail.com, 
>> dadoc127 at hotmail.com, crmaras61 at charter.net, dlcurrie08 at charter.net, 
>> ladyvolleyball at yahoo.com, shayna_rya at yahoo.com, shayna_rya at yahoo.com, 
>> danyelf422 at hotmail.com, davewatson at charter.net, DPerla at ghs.org, 
>> dbouvia at cityofgreer.org, GreenvilleARES at googlegroups.com, 
>> GreenvilleARES at googlegroups.com, amdudes at aol.com, 
>> gwrra.sc.t at gmail.com, hrhoads at cityofgreer.org, ilovetowin at hotmail.com, 
>> jbrockx2 at charter.net, jimlee at remax.net, jhwpa7 at aol.com, 
>> joe_rossi at live.com, jburns at cityofgreer.org, john_owens at bellsouth.net, 
>> johnny.allison at aautomation.com, jeowings at charter.net, 
>> pastelcolors5 at aol.com, parkatrina at hotmail.com, info at festivalnews.info, 
>> cashear at bellsouth.net, lcampbell at cityofgreer.org, 
>> milebackmouth at yahoo.com, marcelle at charter.net, marisa.dyma at gmail.com, 
>> marisa.dyma at gmail.com, mcs6306 at hotmail.com, kf4nxs at charter.net, 
>> wpfp at sprint.blackberry.net, kf4nxs at charter.net, 
>> goddess_chylde at yahoo.com, 9109900509 at message.alltel.com, 
>> notify-dg-goldwingGL1100 at yahoogroups.com, 
>> notify-dg-SCHAMSWAP at yahoogroups.com, kittypat01 at bellsouth.net, 
>> monapearson at charter.net, pcossano2002 at yahoo.com, maeporter at rogers.com, 
>> camphonda at aol.com, rhondamcmurtry at yahoo.com, imru at usa.com, 
>> rswofford at spartanburgcounty.org, rswofford at spartanburgcounty.org, 
>> RSmith9274 at aol.com, ronbec5177 at aol.com, ronbec5177 at aol.com, 
>> jburns at cityofgreer.org, kb0kbj at hotmail.com, timmamma at aol.com, 
>> kat_wolf_ranch at live.com, tuntouchablef at ninewest.com, 
>> tuntouchablef at ninewest.com, VMontgo32 at aol.com, wcossano at bellsouth.net, 
>> cossanocdsct at yahoo.com, aprssig at lists.tapr.org, tonkovicb at yahoo.com, 
>> bmork at cityofgreer.org, brars-owner at googlegroups.com, 
>> brarsreview at googlegroups.com, cartert at usa.redcross.org, 
>> ChapterT at charter.net, cpeder at usgs.gov, bakersmopar at yahoo.com, 
>> coordinators-request at emcomus.org, dadoc127 at hotmail.com, 
>> customercare at averatec.com, shayna_rya at yahoo.com, DPerla at ghs.org, 
>> GreenvilleARES at googlegroups.com, amdudes at aol.com, greg at bigredbee.com, 
>> hrhoads at cityofgreer.org, info at geosat.us, jbrockx2 at charter.net, 
>> joe_rossi at live.com, jburns at cityofgreer.org, john_owens at bellsouth.net, 
>> johnny.allison at aautomation.com, jeowings at charter.net, 
>> josua.george at gmail.com, info at festivalnews.info, 
>> lcampbell at cityofgreer.org, marcelle at charter.net, 
>> wpfp at sprint.blackberry.net, 9109900509 at message.alltel.com, 
>> monapearson at charter.net, rhondamcmurtry at yahoo.com, 
>> rswofford at spartanburgcounty.org, ronbec5177 at aol.com, 
>> sar-aprs-subscribe at sbsar.org, swendelken at greenvillecounty.org, 
>> kat_wolf_ranch at live.com, tuntouchablef at ninewest.com, 
>> usgscatalog at usgs.gov, webmaster at upstaterose.com, 
>> wharfedalepro at iagpro.com, metricprecision56 at gmail.com, 
>> angel at emediagrp.com, bethm6404 at charter.net, wetrike at gmail.com, 
>> butchmak at gmail.com, cmlozano at bellsouth.net, startexfirelady at gmail.com, 
>> clyde-alex at hotmail.com, crmaras61 at charter.net, dlcurrie08 at charter.net, 
>> ladyvolleyball at yahoo.com, gwrra.sc.t at gmail.com, 
>> ilovetowin at hotmail.com, jhwpa7 at aol.com, jimlee at remax.net, 
>> pastelcolors5 at aol.com, cashear at bellsouth.net, kf4nxs at charter.net, 
>> kittypat01 at bellsouth.net, pcossano2002 at yahoo.com, camphonda at aol.com, 
>> RSmith9274 at aol.com, VMontgo32 at aol.com, wcossano at bellsouth.net, 
>> cossanocdsct at yahoo.com
>> Sent: 14.3.'10,  16:44
>>
>> Someone has jacked my acct and sent out emails. I have taken action 
>> and changed passwords to rectify this happening again. Please 
>> disregaurd emails sent.
>>
>>
>>
>>
>> _______________________________________________
>> aprssig mailing list
>> aprssig at tapr.org
>> https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig
> 
> 
> _______________________________________________
> aprssig mailing list
> aprssig at tapr.org
> https://www.tapr.org/cgi-bin/mailman/listinfo/aprssig
> 




More information about the aprssig mailing list