This post is to discuss what "Deceptive Site Ahead" means and why do you get that warning in your browser.

Google Safe Browsing services are the creators of the message and have introduced it to their Google Chrome browser and Chromium project. That means that you can see the message in other browsers based on the Chromium project, like Opera for example.

The messages reads:

"Deceptive site ahead.
Attackers on (URL) may trick you into doing something dangerous like installing software or revealing your personal information (for example, passwords, phone numbers, or credit cards)."

Most website domains that are not accessed right away, but show that message in your browser, are either filled with malware or are phishing and require you to enter your account details for a site that seems like a popular page (Facebook for instance).

Sometimes, the page is totally legitimate but not very well known and you can see the warning pop up without the site containing or leading to any malware. Remember that the message is for potential threats and not 100% accurate all the time, although you should consider researching that URL before removing the warning and going to such a site.