My company struggled with it for years and there is still no end in sight, we have been "hacked" several times through vulnerabilities in WHMCS. Mid last year

My company struggled with it for years and there is still no end in sight, we have been "hacked" several times through vulnerabilities in WHMCS. Mid last year we changed to https://www.blesta.com/ https://www.blesta.com/ and since they are open source with a good security track-record - we hope that the issues will be over. The only drawback is that they don't have as many 3rd party integrations yet, and that customers have to get used to the new interface.