Mandatory keys cut successful phishing attacks on Google to zero This is impressive for a company with so many staff and so many computer systems and third party contractors. Full story here. https://www.engadget.com/2018/07/24/security-keys-google-phishing/ I use the Yubikey Neo which is a bit pricey but supports NFC for phones etc plus some other high tech features I need. https://amzn.to/2mFXX5T At £45 probably overkill. However they also do an £18 basic version which will allow you to protect most stuff when on a laptop or computer. https://amzn.to/2mIh93b : £18 one off cost.