Data guardian Iron Mountain this week introduced a new service, DataDefence, that will wipe sensitive data off stolen or lost laptops via a web interface. The service is geared toward corporate enterprise environments that are confronted with laptop thefts in increasing numbers. Corporate workers are carrying a lot of sensitive and confidential information on mobile computers and the new service looks to make IT security people breathe a little easier. The service can be hosted by Iron Mountain through subscription or can be licensed to corporate data centers if the company wants to maintain control over the data. DataDefence can be configured as a “dead man’s hand” switch where laptops can be locked down if users don’t log into the the corporate network at prescribed intervals.