Although they make mistakes and improvements always need to be made, the largest and most popular websites work actively to ensure the security of their users. In the case of the Huffington Post, they have been responsible in alerting their users to possible viruses. Companies need to ensure they have up-do-date systems and highly skilled security staff to stay on the cutting edge of security technology.
At this point, there has been more than enough news about the dangers of digital hacks that the general public should be aware of the severity of the problem. Yet major consumer-facing corporations apparently are still not taking this problem seriously enough. Sure, the Huffington Post hack doesn't rank as highly as the theft of credit card information, but it's still a big liability.
To survive on the Internet, popular websites need to ensure that readers are protected from viruses. The recent news of viruses attacking visitors to Huffington Post shows that some popular websites are not protecting their users well enough. If these popular websites want to survive, they need to make sure users are secure.
Websites that people consider safe and reliable need to do a lot to make sure that they are doing all they can to keep their viewers safe. It sounds as though the ad server (The Rubicon Project) may be the one to blame, and malware advertising is predicted to become a bigger problem. Maybe it's time for online sites to do old-fashioned advertising, where they have direct contact with the advertisers and work with them to make static ads.