VoIP Security and the Laptop
Despite VoIP technology having taken off, VoIP security is seldom regarded as a critical issue. That's surprising because VoIP is inherently insecure. It's a lot less secure than the plain old telephone system (POTS).
VoIP is a digital technology that operates over IP networks, which may include public networks such as the Internet. It's a computer application and as such it's susceptible to all the same exposures as computer systems and data networks. Those threats that we have become familiar with in the IT world also apply to VoIP.
The security threats include all the usual suspects: viruses, worms, Trojan horses, DoS (denial of service) assaults and hijacking, but in addition VoIP is also vulnerable to: toll fraud, phishing, SPIT (Spam over Internet Telephony) and eavesdropping. Tool sets have even been developed that will add, delete and change words in a VoIP conversation.
The use of VoIP has laptop security implications and visa versa. Just like email, VoIP is a potential malware distribution channel. Going the other way, a PC can be infected via vectors unrelated to VoIP that then impair VoIP security or result in denial of service.
VoIP security can be addressed by many of the same tools and disciplines that have been used for years in the IT world:
Probably the biggest challenge is that VoIP users see VoIP as simply a telephone system and most of us aren't too concerned about the security of our phone calls. That attitude has carried over into how we treat VoIP technology, but it's a totally different from the traditional PSTN (public switched telephone network). VoIP security cannot be taken for granted.
Types of VoIP User
VoIP Security Threats
Hopefully after reading this laptop users with Skype or other peer-to-peer options will be a little more concerned about security. That is not a bad thing; however we note that Skype VoIP runs over a proprietary encrypted VPN that has been judged by cryptologists to be highly secure. Corporate IT administrators don't like the fact that it's a closed proprietary protocol. We would argue that makes Skype more secure and along with millions of others we will continue to make free VoIP calls.
Surf The Internet At Work?
Windows and other software programs store history about the different activities that you have performed on your computer and on the Internet. This information is stored in the system areas of your hard disk and the built-in Windows functions like 'Clear History' offer little protection as they can only partially delete this data. Anyone can take a look at your history and find out what you have been doing on your computer, and this raises serious privacy concerns.
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