Voice-over-Internet Protocol provider Skype assures its users that for sure, Skype-to-Skype calls, meaning those made directly from one user’s PC to another’s PC, are secured using a 256-bit encryption algorithm. This is even more secure than the 128-bit keys used to encrypt transmission of credit card numbers over the Internet.

However, one issue is raised with this level of calling security offered by Skype. Legitimate users are sure to be safe from eavesdropping by government agencies or any other entity. But what if terrorists or criminals are using the service, then they are safe from monitoring by the authorities themselves. This can prove to be a security risk.

Authorities, however, believe there are ways of going around Skype’s security. For instance, Skype connections to the regular telephone network (through SkypeOut or SkypeIn) are not secure, as they can be tapped from the telephone-side. And some law enforcers believe it’s not only the conversation that’s essential to monitoring for criminal activity, but also the tracking of the call origin, and monitoring of which accounts get to connect with one another.

Also, Skype maintains that it regularly cooperates with lawful requests for information and monitoring by law enforcement agencies, but does not disclose which agencies, and the extent of information provided. But one thing’s for sure—Skype’s VoIP is a great way to call securely. Just make sure you’re not a terrorist or in the mafia!