What can I do to protect myself after 'Asos hacked' message?

If a strange-looking message from Asos popped up on your phone on Tuesday, you may be worrying what it could mean and whether you need to do anything.

The online retailer has emailed customers apologising for the "unauthorised push notification" containing an external link, adding that they should disregard the message and not click on it.

Here's what has happened, and what those who may have been affected are being advised to do.

On Tuesday morning, Asos users across the UK were sent pop-up messages from its app that appear to have been sent by hackers trying to extort the company.

"Dear ASOS DPO and IT, we have fully compromised the Snowflake instance. Engage with us, or we will leak it," the message read.

Later that day, Asos said it took immediate action to restrict the apparent hackers' access, was investigating and working with advisers and relevant authorities on "next steps".

Data storage company Snowflake told the BBC its investigations had "found no compromise" of its platform.

On Tuesday evening, Asos told customers it may include "basic personal information including name and contact details".

"However, we don't believe that any payment-card information or account passwords have been impacted," it added.

While those who received the pop-up message will undoubtedly be concerned, it does not mean your phone has been hacked.

Change passwords: It's worth updating your password, including across other sites that use the same one as your Asos account. The advice for a strong password is to mix numbers, symbols and upper and lower case characters, and avoid using the same password across multiple accounts

Turn on two-step verification for important apps like banking and email: The National Cyber Security Centre (NCSC) calls this "one of the most effective ways to protect your online accounts from cyber criminals". You can usually turn it on by going into the security settings in your account