When receiving a pdf file by e-mail, the question is how to open it. Browsers are normally quite secure, don't support all pdf features (an advantage in this case) and the viewer/conversion might loose malicious code. On the other hand a local js might get access to local files...?
So: Is it a good idea to view attached pdf files in a browser?
(If it matters: I mostly care about Windows and a locally installed email client.)