For about 24 hours over the weekend, The New York Times site was serving up fake security software (scareware) The Times blamed a rogue advertisement for the malware blast. The ads, which are not authorized or endorsed by The Times, can hijack a person s browser and make it appear as if a scan for viruses is running. The Times believes it has eliminated these ads, but if you saw a suspicious antivirus warning on your screen, it is possible that the creators infected your computer with a malicious program.
Source: https://threatpost.com/rogue-advertisement-pushes-scareware-nytimescom-readers-091509/72226/