Cybercrimals are taking advantage of US president Barack Obama's popularity to target computer users.
Thousands of e-mails are circulating with headlines like "Obama assassinated" that link to malicious websites.
These websites then infect computers with malicious code aimed at stealing personal information to commit crimes, said Shawn Eldridge of internet security firm Borderware.
In addition to e-mail, other messaging routes are also being exploited, including Twitter, instant messaging, social networking and blogs.
"The story of the new US president is of interest to us all, meaning that any one of us could fall victim to these attacks without thinking and instantly put our computers and data at risk," said Eldridge.
Businesses are advised to ensure their spam protection systems are able to block malicious e-mails by checking the reputation of the sender through resources such as the Reputation Authority site.
Guy Bunker at security firm Symantec said in a blog posting that users should remember that the goal of the phisher is to pique your interest and get you to click on a link.
"So, if you receive e-mail, tweets, or instant messenger alerts surrounding the president elect, think twice before clicking on them," he said.