AfterDawn: Tech news

Hundreds of thousands of Yahoo.com users hit with malware

Written by Andre Yoskowitz (Google+) @ 05 Jan 2014 17:58 User comments (7)

Hundreds of thousands of Yahoo.com users hit with malware Yahoo has confirmed that their advertising servers had been hijacked allowing malware to be distributed to hundreds of thousands of users.
Two security firms first brought the situation to light, including Fox IT, who wrote: "Clients visiting yahoo.com received advertisements served by ads.yahoo.com. Some of the advertisements are malicious." The regular ads were replaced with an "exploit kit" that "exploits vulnerabilities in Java and installs a host of different malware."

The malware appears to have started on December 30th, and lasted a few days. Yahoo says, "At Yahoo, we take the safety and privacy of our users seriously. We recently identified an ad designed to spread malware to some of our users. We immediately removed it and will continue to monitor and block any ads being used for this activity."

While they were active, "malicious payloads were being delivered to around 300,000 users per hour," said Fox IT, who estimates 27,000 users per hour were clicking on them and becoming infected.

Tags: malware Yahoo
Previous Next

Related news

 

7 user comments

15.1.2014 21:06

Best argument for AdBlock+ I have ever seen. No ad, no malware.

25.1.2014 22:43

This doesn't surprise me....It IS Yahoo after all.

35.1.2014 22:47

I've had Google-sponsored ads attempt to ply me with malware in the past; in fact, that's why I use AdBlock+ now. It's not just a "Yahoo thing".

46.1.2014 1:31

Yahoo is the leading supplier of spam for my e-mail account. They enable Canada to peddle Rx meds, and all the scammers who want to F*** me, saying they saw my picture or profile on a social site.
Really farcical, as I have never used the web sites alleged.
Easy to judge the character of Yahoo, by the company they keep.

56.1.2014 6:48

I guess this is Yahoo's new business model........

66.1.2014 10:01

Pay attention to what you are intending to do.

Do NOT click on random crap !!!


AMD Phenom II X6 3.2GHz
SSD w/1TB Data Drive
16 GB Memory
nVidia GTX 760

76.1.2014 12:32

Originally posted by rulisky:
Pay attention to what you are intending to do.

Do NOT click on random crap !!!
It wasn't about clicking on anything at all. Malware in a banner ad can attempt to infect you with no action on your part at all.

Comments have been disabled for this article.

Latest news

Plex now available for PS3, PS4 with limitations Plex now available for PS3, PS4 with limitations (17 Dec 2014 22:56)
A little over a month after Plex released an app for the Xbox 360 and Xbox One, the personal media streaming company has released apps for the PS3 and PS4.
U.S. to blame North Korea for Sony Pictures hack U.S. to blame North Korea for Sony Pictures hack (17 Dec 2014 21:52)
According to numerous media outlets, U.S. government officials will announce tomorrow that North Korea was indeed behind the devastating hack on Sony Pictures.
1 user comment
Sony has no plans to ever release 'The Interview' - no DVD, Blu-ray, no VOD, no TV Sony has no plans to ever release 'The Interview' - no DVD, Blu-ray, no VOD, no TV (17 Dec 2014 20:30)
Sony Pictures has now decided against ever releasing 'The Interview' in any form, almost guaranteeing themselves a $100 million loss on the film.
9 user comments
Nearly everyone in Hollywood is outraged by Sony and the movie theater chain's 'act of cowardice' in canceling 'The Interview' Nearly everyone in Hollywood is outraged by Sony and the movie theater chain's 'act of cowardice' in canceling 'The Interview' (17 Dec 2014 20:00)
Following news that all the major U.S. movie theater chains would not be showing 'The Interview,' Sony Pictures announced it was canceling the release of the film, which was slated to open on Christmas in the U.S.
1 user comment
The hackers win: Sony cancels release of 'The Interview' as movie theaters bail The hackers win: Sony cancels release of 'The Interview' as movie theaters bail (17 Dec 2014 19:39)
Just hours after major U.S. theater chains said they would not screen the film following terrorists threats, Sony has canceled the release of 'The Interview,' a comedy in which Seth Rogen and James Franco are sent to North Korea to assassinate Kim Jo
3 user comments

News archive