Southwest Airlines Co. has just implemented software that allows hundreds of its engineers and mechanics to access proprietary information from its aircraft supplier's systems, using a single Web sign-on.
A new network worm that spreads through shared folders on machines running Microsoft Corp.'s Windows NT, 2000 and XP operating system has been detected, according to advisories posted by a number of antivirus software makers Tuesday.
So-called ghost accounts, those not closed when workers leave their employers, can include access to mainframes, databases, file servers, intranets and e-mail.