Malicious advertisements on reputable and popular Websites like Facebook, Disney, and even The Guardian newspaper have been detected to redirect clicks to sites that will infect your computer with Ransomware. Many other reputable Websites are undoubtedly also involved. This is what makes this kind of malware so sacary, since you expect Websites like those mentioned above to be trustworthy. The Website owners may not even know their site is making their users vulnerable, but you are vulnerable none-the-less.
If you click on one of the malicious advertisements, you may be led to malware that encrypts a computer’s files and demands a ransom before you can recover your files.
There’s no sure fire way to detect such advertisements on a Website. Just don’t click ANYTHING out of curiosity alone. Be darn sure your interested in what you’re clicking on. And backup – backup – backup just in case you become a victim.