Google Alerts is a useful service that allows you to monitor keywords that you wish to monitor. When new pages are found that match these keywords, Google will either send you an email or update an RSS feed. Bad actors are injecting malicious sites into the Google search index in order to have them also appear in Alerts being sent to users. When a user clicks on one of these alerts, they will then be sent to a page that then redirects them through a series of other pages until they land at a fake giveaway page or malware installers.
Source: https://www.bleepingcomputer.com/news/security/beware-of-google-alert-links-leading-to-malware-and-scams/