| When the remote sensors communicate with the director, they must do so securely. Alarms sent across the Internet could potentially be intercepted by hackers. To combat this, the Cisco Secure IDS uses encryption. All data is encrypted and tunneled within another packet. The original packet is encrypted. It is encapsulated, or placed inside of another packet. The enveloping packet is sent across the Internet. Anyone who might obtain a copy of it will not be able to read it.