from:
http://www.wired.com/news/technology/0,1282,36241,00.html
Click Here: <A
HREF="http://www.wired.com/news/technology/0,1282,36241,00.html">Hotmail
Email Exposed</A>
-----


Hole Exposes Hotmail Email
by Declan McCullagh
3:00 a.m. May. 10, 2000 PDT

A new security hole in Microsoft's Hotmail service allows enterprising snoops
to browse your email messages without a password.

If a Hotmail user clicks on an attachment that contains a Javascript Trojan
horse, an attacker can read, send, and delete messages from that person's
account.

"Anyone could use this trick to gain access to another person's Hotmail
account temporarily and read their messages," says Bennett Haselton, a
programmer who lives in Bellevue, Washington and discovered the bug.

Wired News verified the exploit, but Microsoft said it did not have an
immediate response. "We always research potential issues and if indeed there
is a problem, we work on an immediate fix for best customer end result," said
Microsoft spokeswoman Jessica Schaefer.

Hotmail, which claims to be the world's largest provider of Web-based email,
has encountered other security glitches in the past. Last summer one problem e
xposed the personal email accounts of over 50 million users to prying eyes.

The attack works when a Hotmail user clicks on an HTML attachment with an
embedded Trojan horse. The attachment intercepts Hotmail.com's cookies --
which include a session key called MSPAUTH -- and forwards them to the
attacker's computer.

With the MSPAUTH key, an intruder can obtain complete access to a Hotmail
account, which also could include finding POP email account passwords stored
with Hotmail.

"It took about two hours to get it all working," says Haselton, an anti-blocki
ng software activist who has unearthed five security glitches in browser and
email software in the last two weeks.

Haselton said users are accustomed to being able to click on links in their
Web browsers without ill effect.

"There's no way to notify all Hotmail users that they should be aware of the
dangers of clicking on an HTML attachment. It won't work," he said.
"Experienced users will just ignore that. Viewing a remote HTML file should
not be at all dangerous."

Microsoft said its development team is looking into the problem.

Microsoft encountered further criticism last week, when Unix and Macintosh
users applauded the fact that they were immune from the Love Bug worm.



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