Hi Community   We have been working on a custom built integration between our website (powered by Squiz Matrix CMS) and Marketo to create a website personalisation layer to make our website more dynamic. Before we go live, we wanted to check our integration is both best practice and secure for Marketo.   Our integration takes the munchkin ID of incoming visitors to the site if available, performs a lookup via the SOAP API on the record to determine specific known attributes, and uses this information to serve up personalised content and passing it to Google Analytics. In the future as we look to enhance personalisation, we may also store this information in a data store.     We looked at using the munchkin API, but this did not provide a definitive method for getting lead data back to our CMS. The lead data we are requiring are audience attributes so we can group audiences for specific messages on our website and also feed that data through to GTM for additional behavioural tracking/analysis. Our CMS (Squiz Matrix) provides an out of the box integration through SOAP https://matrix.squiz.net/manuals/marketo/chapters/marketo-bridge that we plan to use.   Can anyone offer their assessment of how secure/safe this setup will be for Marketo as we have heard there can be security issues using SOAP API.   If there are indeed security issues we would like to know a) what they are so we can feed this back to Squiz, b) in what specific cases can we use SOAP API, and c) what alternative method is available for us to consider.   We have looked at Marketo's website personalisation product, but it is out of our budget.   Thanks very much!   ... View more