Staying secure online is a big problem. You have viruses, trojans and all kinds of nasty people trying to steal your money or turn your device into a bot that can be used to infect other devices. Don't make it easy for them. Protect your devices. Don't click links in emails. Keep your software up to date.
If you have managed to get infected, or you know someone who has, the info on the following sites may help in removing whatever nasty has managed to sneak in. Maybe you just want to keep up to date on what new threats are about. Either way, the information linked on this page may be of interest. The links below lead to Symantec's Security Centre, ESET's Virus Radar and Trend Micro's Security Analysis and Intelligence sites respectively.