Covered at
http://blogs.securiteam.com/index.php/archives/1157

pointing to Hebrew language article
(http://www.calcalist.co.il/articles/0,7340,L-3143244,00.html)

"According to the article, google sent a follow up email to the participants and warned them the network was compromised. This is interesting first because the attack was on the wired and not wireless Internet, which is considerably harder to do without being caught, and second because it reminds us how insecure gmail is over compromised lines (as opposed to, for example, a corporate VPN)
...."