Upgrade OpenSSL and A2Billing Now.
It has been widely reported that a recently discovered bug in OpenSSL compromises the security of communications data. Any A2Billing administrator who has installed an SSL certificate to provide HTTPS encryption on their website should upgrade OpenSSL as a matter of urgency.
There is more information at http://heartbleed.com/. To check whether your site is affected, go to http://filippo.io/Heartbleed/ and enter the domain name to check.
We've also had a 3rd party security expert audit A2Billing in the interests of increasing security. They have found a major security issue. We've no evidence that this exploit is in the wild, but we advise in the strongest possible terms that you upgrade to A2Billing version 2.0.8 as a matter of urgency.
If you need assistance with upgrading your operating system or A2Billing or an installation with transfer of A2Billing data, then please contact us