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Cryptocurrency mining site hijacked millions of Android phones
Smartphone users are just as vulnerable to cryptocurrency mining hijacks as their PC counterparts, and sometimes on a dramatic scale. Malwarebytes has detailed a "drive-by" mining campaign that redirected millions of Android users to a website that hijacked their phone processors for mining Monero. While the exact trigger wasn't clear, researchers believed that infected apps with malicious ads would steer people toward the pages. And it wasn't subtle -- the site would claim that you were showing "suspicious" web activity and tell you that it was mining until you entered a captcha code to make it stop.
Huge malware campaign used Yahoo's ad network
You've probably heard of malware-laden ads causing havoc on the web, but rarely on this scale. Malwarebytes has discovered a malware campaign that was using Yahoo's ad network to target legions upon legions of visitors -- Yahoo's main site racks up 6.9 billion visits per month. While it's not clear what would happen if you fell victim to an attack, the Flash-based exploit kit linked to the campaign typically includes both ad fraud and ransomware. In short, there's a real chance that you could have been locked out of your PC simply by checking on your fantasy sports league.
