Long-running malvertising campaign infected thousands of computers per day

Security researchers have shut down a large-scale malvertising operation that used sophisticated techniques to remain undetected for months and served exploits to millions of computers.The operation, dubbed AdGholas, has been running since at least October 2015. According to security vendor Proofpoint, the gang behind it managed to distribute malicious advertisements through more than 100 ad exchanges, attracting between 1 million and 5 million page hits per day.The Proofpoint researchers e