Again... from the original article, the browser related stuff that he mentioned was aimed at monitoring their own people on their internal networks to make sure they aren't causing security issues (knowingly or unknowingly). Most of what he talks about has little do with things being done from a PS3. Its about the general security of Sony's networks and facilities.
On the consumer end they want to have better automated monitoring so that if something weird starts happening (i.e. purchases made by your account are suddenly coming from an IP address in Nigeria) they can spot it quickly and help prevent fraud to protect their customers.
One inflammatory article from Eurogamer isn't a good reason to start freaking out.
