Just my two bits. Often it is not a bad idea to check the security of your computer by sending "malicious" items to see whether everything is working as it should.
Heise Securities gives a good run down on security issues i.m.o and offers some real time checks to see whether your security programs and settings are doing their job.
I do not want to post their internet address since I do not know whether it is allowed here. Just google for >heise securities co uk< and Google will give you their site in first place (viz. The H security: News and Features). Choose >security< at the top, then scroll down to Internet Toolkit (rigth hand side) where a listing is given, e.g. Email check, Browser check, etc.
There is also a good discussion of security issues on their site, what to watch out for and keep in mind, especially if you are not an "expert".