As big companies become victims, here’s what you can do, from changing passwords to using two-step authentication

Almost every week seems to bring news of a cyber-attack on a company, or organisation, and fears over what personal data the hackers have managed to get hold of.

Last month, the footwear and sports apparel company Adidas revealed that some of its customers’ personal information had been stolen, although it said passwords, credit card and other payment data were not compromised.

In another incident, the personal data of hundreds of thousands of legal aid applicants in England and Wales dating back to 2010 was accessed. And these came hard on the heels of cyber-attacks that caused huge disruption at Marks & Spencer and the Co-op.

If a news story emerges about a cyber incident, and it is a company or organisation that you use, or have used in the past, keep an eye out for an email from it. Affected companies will usually contact customers to give them more information about what happened and what they should do.