Security experts from various firms have discovered a malvertising campaign that has been placing malicious ads on very popular websites like BBC and NYT. The attack hijacked the ad network from each of these websites, crooks used the Angler Exploit Kit to deliver Ransomware to the people visiting these websites. By acquiring a recently expired domain, the threat actors are able to bypass some checks because the traffic appears as legit. The attacks based on the Agler exploit kit increased in a significant way since March 9.”]
Source: http://securityaffairs.co/wordpress/45362/cyber-crime/top-websites-malvertising-campaign.html