For the past few weeks, Forbes.com has been forcing visitors to disable ad blockers if they want to read its content. Visitors to the site with Adblock or uBlock enabled are told they must disable it if they wish to see any Forbes content. Thanks to Forbes' interstitial ad and quote of the day, Google caching doesn't capture data properly, either.
What sets Forbes apart, in this case, is that it didn't just force visitors to disable ad blocking - it actively served them malware as soon as they did. Details were captured by security researcher Brian Baskin, who screenshotted the process.