Kaspersky labs out of Russia was hit again this past month. The breech began in south east Asia where they entered one employee computer, settled with a phishing email. The package was discovered within a few hours and the perpetrators had to leap frog out and scrub the machine. In the time it took Kaspersky to find out they had been breeched the attackers had moved deeper into their networks.
The whole tale is told over at wired, check it out. Its a pretty cool read about the daily cyber war.