This doesn't happen on Firefox or Chrome on my Linux PC, and it never happened before now on Android. Could my site actually have been compromised somehow, or what could have caused Google to suddenly flag it as phishing? I have had the site for years, by the way.Deceptive site ahead
Attackers on [my site] may trick you into doing something dangerous like installing software or revealing your personal information (for example, passwords, phone numbers, or credit cards).
For more possibly relevant information, I use SSL encryption on my site with letsencrypt and use a dynamic DNS service for the domain name.