Cybersecurity Group Raises IE Threat Level To Yellow

The Internet Storm Center, an analysis and warning service to Internet users and organizations, on Saturday set its threat level to Yellow, regarding attacks exploiting a vulnerability in all versions of Microsoft's Internet Explorer (IE) browser that was reported last week.

The ISC decided on the Yellow threat level over the weekend after getting reports of attacks on the rise. "The Internet Storm Center is beginning to see increasing evidence of exploits in the wild regarding Microsoft Security Advisory 2887505," a post on the ISC Web site said. "Accordingly, we're moving the InfoCon up to Yellow."

Meanwhile, FireEye, a Milpitas, California-based security company, made note of a campaign targeting organizations in Japan and leveraging the exploit, a campaign that had started in August.

Threat level "Yellow" at the ISC is two levels below ISC's Red, the organization's highest threat level. Yellow means the impact of the threat is either unknown or expected to be minor to the infrastructure. However, local impact could be significant, and users are advised to take actions. Orange signifies a major disruption in connectivity is in progress or imminent. Red means loss of connectivity across a large part of the Internet.

Scanner Sightings

The ISC said, "It appears that an exploit has been in the wild since August 29, 2013 when it was first seen by one of the online security scanners. There is some indication that a weaponized exploit may be in broader circulation now, so expect this to ramp up quickly."

FireEye reported that the campaign, "Operation DeputyDog," bore similarities to infrastructure deployed in the attack on New England company Bit9, a leading provider of software and network security services, earlier this year. FireEye further noted that the DeputyDog attackers have demonstrated "a robust set of malware payloads."

Microsoft has been investigating the reports of the vulnerability...

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