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Keeping email under lock and (public) key (NewsForge)

Marcelo Rinesi explains how to encrypt mail archives in a NewsForge article. "With governments and law enforcement organizations pushing for increasingly intrusive monitoring and logging of business email messages, network administrators are put in an uncomfortable situation. Even disregarding privacy implications, such systems pose security problems at least as serious as those they attempt to solve. A "master archive" of emails is after all an extremely tempting target to external hackers, but it also has staggering potential for internal abuse. Ideally, we would want no centralized mail logs, but legal and corporate requirements mandate suitable record-keeping in the case of an internal or external audit. One way to meet both goals is by encrypting the archive using public key cryptography."
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Stay Away from Gmail

Posted Jul 3, 2005 2:34 UTC (Sun) by huffd (guest, #10382) [Link]

People that use gmail should know that all mail coming and going from those accounts whether solicited or not are monitored.

Stay Away from Gmail

Posted Jul 3, 2005 5:57 UTC (Sun) by TwoTimeGrime (guest, #11688) [Link]

Not just gmail but probably any free email account.

Stay Away from Gmail

Posted Jul 3, 2005 7:43 UTC (Sun) by danielpf (subscriber, #4723) [Link]

This is why all my junk mail is redirected to gmail.

Stay Away from Gmail

Posted Jul 5, 2005 2:15 UTC (Tue) by jabby (subscriber, #2648) [Link]

Monitored by whom? Google or the spooks? If you mean Google, are you just raising that old scarecrow about them reading your email to deliver you targeted advertising? If so, any email service can "read" your email as it passes through. I don't know about you, but I don't mind an automated word-matching algorithm scanning my email. I know my email is not secure and I don't put anything secret in it.

Now if you meant that Google is letting the government monitor my email, then that's an entirely different story. I don't believe that they would do that without disclosing it, but then again maybe they're not allowed to... in which case, how would *you* know?

Basically, don't spread rumors like that without some information to back you up.

Keeping email under lock and (public) key (NewsForge)

Posted Jul 3, 2005 5:56 UTC (Sun) by beejaybee (guest, #1581) [Link]

If individual messages were encrypted the archive needn't be. And this would make spies jobs harder too.

But I suspect the soft spot in most email systems is the ability to infect the end users systems (mostly running windoze) with backdoor trojans incorporating key loggers, which obviously make moot the security or otherwise of any encryption strategy.

Keeping email under lock and (public) key (NewsForge)

Posted Jul 3, 2005 6:22 UTC (Sun) by eru (subscriber, #2753) [Link]

If individual messages were encrypted the archive needn't be. And this would make spies jobs harder too.

But not encrypting the entire archive means that if the someone manages to covertly acquire the archive, he can still find out who communicates with whom and when, even if the message contents are hidden. This is sometimes almost as useful knowledge as the actual message contents.

Keeping email under lock and (public) key (NewsForge)

Posted Jul 3, 2005 19:39 UTC (Sun) by brianomahoney (subscriber, #6206) [Link]

Two comments:

First, the last poster is exactly correct, and such communication patten
analysis has been performed to devestating effect, some public hints are
available in the 'crypto-war-stories' of WW II, see Bletchley Park, and
so modern secure communications systems, which e-mail isnt, must generate
garbage messages to ensure a uniform rate and destination of messages and
if it does not do that it is VERY vunerable to statistical analysis. Also
letting attackers have masses of crypto-text makes many crypto attacks
simpler.

Second, No ammount of encryption will save you or your corporation from
a court. A subpoena Duces Tecum mandates you produce what the court tells
you to, decrypted if necessary. Large enterprises, wanting to have communication security,
need to design their e-mail process and technical
infrastructure VERY carefully and to operate it, and be seen to operate
it in accordance with their Security Policy. So, for example, the Policy
architecture and infrastructure need to be carefully documented, to the
satisfaction of both the techs and lawyers, concentrating on the avoidance
of un-wanted backups, eg each days e-mail is dumped twice to 2 DVDs, each
containing exactly on days mail and the mail is electronically deleted on
on the 91st day and the DVDs burned at the start of each working day.

Only if the Policy, Methodology and records of daily operation all confirm
a rational policy will the Judge believe you, so you MUST have a good
answer, that is true, to "look on last years backup tape".

In these days of Sarbanes-Oxley compliance both the Policy, including when
e-mails can be copied into other records, and the implementation must be
waterproof.

Keeping email under lock and (public) key (NewsForge)

Posted Jul 6, 2005 11:14 UTC (Wed) by cpm (guest, #3554) [Link]

Under Duces Tecum, I've kinda always assumed that if giving "it" up
implies harsher consequences than a contempt of court charge, you
don't give it up. Period.

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