AUTHOR: TITLE3time getting weaker and not capable ofwithstanding potential attacks. When this SSLcertificates are signed using these oldtechnologies, it is evident that as transition occursin our browsers, most Virtual Private Networkswill remain unsigned and thus hackers will have avery easy way getting through.Forty percent of the examined Virtual PrivateNetwork servers were found to be using theinsecure 1024 bit keys for RSA certificates. RSAkey lengths should be more than 2048 since theyare responsible for authentication and encryptionkey exchange. The less the key size, the easier itbecomes for a hacker to do code breaking andcrypto analysis which will definitely make ourVirtual Private Network insecure.A tenth of the SSL Virtual Private Network serverswere also found to rely on Open SSL such asFortinet which are vulnerable to Heartbleed. Afterthe discovery of Heartbleed vulnerability, allproducts using open SSL were found to becreating a straightforward way for third partieswhose intention may be to extract sensitiveinformation such as encryption keys and moresince the systems get unmatched.Another study by Vasile C. Perta, Marco V.Barbera and Hammed Hadadi of Queen MaryUniversity saw most vendors’ privacy and securitypromises as fake and putting users at risk.Majority of Virtual Private Networks were foundto suffer from IPv6 traffic leakage on mildlyadversarial environments. Their research revealedthat most Virtual Private Network tunnelingtechnologies rely on old technologies like thePPTP with MS-CHAPv2 which can be easilybroken into using methods such as brute-forceattacks. Many Virtual Private Networks were alsofound to leak data exposing significant amounts ofuser information which can be easy to access bythe hackers contrary to vendor claims.It was also evident that all the DNS configurationsmost Virtual Private Networks use are easilyovercome by DNS hijacking attackers.Users’satisfactionAlthough many users have heard the need forVPNs, a review shows that only few manage toget their required VPN service. The table belowrepresents our reviewVPN vendorUsersreviewedUserssatisfiedUsersnot sureExpress VPN1343HotSpot Shield831Pure VPN641Safer VPN1274The review was conducted on the four VPNs andthe results show that only few users get satisfiedon a given VPN they choose.Working of a VPNA Virtual Private Network is similar to a home orwork private network. It is supposed to work in away that nobody outside the network can share orread data from inside. The difference between a

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