Most of our users simply wouldn’t believe the level of attacks that our servers are routinely subjected to. Most of them are simply annoyances, but some are more serious – having the potential to break into our systems to steal our information, your information, or disrupt normal usage of the service.
As a result we’ve made many security enhancements – the most recent of which has the unfortunate effect of potentially disrupting valid usage of our service. We’ve implemented a “Web Application Firewall”. This comes with a vast set of rules to detect malicious usage. We’ve done our best to tune these rules so they do not disrupt valid usage of our service – but occasionally somebody comes up with a query that we hadn’t thought of.
In this case you’ll be presented with a “403 – Forbidden” message. When this happens, please let us know, and we’ll resolve the issue. We’d also like to thank you in advance for your patience.