Why is Avast blocking a RackSpace service?

Beginning earlier today avast began generating a warning on … “service.force.com” … (incomplete link) which is encountered when logging into the RackSpace email service management console. The finding is “esw.min.js”. Before I go complaining to a huge email service provider that there’s something wrong with their website, can anybody shed some light on what Avast (Avast Business Pro 20.4.2593, definitions 200713-8) thinks it found there?

Thanks.