The 20 commandments: The dos and don'ts of online safety

James Silver asks the experts for their top tips on keeping the cyber fraudsters at bay.

1. Never click on a link you did not expect to receive

The golden rule. The main way criminals infect PCs with malware is by luring users to click on a link or open an attachment. “Sometimes phishing emails contain obvious spelling mistakes and poor grammar and are easy to spot,” says Sidaway of Integralis. “However, targeted attacks and well-executed mass mailings can be almost indistinguishable [from genuine emails].” Social media has helped criminals profile individuals, allowing them to be much more easily targeted, he adds. “They can see what you’re interested in or what you [post] about and send you crafted messages, inviting you to click on something. Don’t.”