Yahoo says some ads on its European sites spread malware

Published January 6, 2014
The Yahoo logo is displayed outside of the offices in Santa Clara, California. — AP Photo
The Yahoo logo is displayed outside of the offices in Santa Clara, California. — AP Photo

Some advertisements on Yahoo Inc's European websites last week spread malicious software, Yahoo said on Sunday, potentially infecting thousands of users.

On Friday, Fox-IT, a Delft, Netherlands-based computer security firm, wrote in a blog that attackers had inserted malicious ads served by ads.yahoo.com.

In statement on Sunday, a Yahoo spokesman, said: "On Friday, January 3 on our European sites, we served some advertisements that did not meet our editorial guidelines, specifically they spread malware." Yahoo said it promptly removed the bad ads, and that users of Mac computers and mobile devices were not affected.

Malware is software used to disrupt a computer's operations, gather sensitive information, or gain access to private computer systems.

Fox-IT estimated that on Friday, the malware was being delivered to approximately 300,000 users per hour, leading to about 27,000 infections per hour. The countries with the most affected users were Romania, Britain, and France.

"It is unclear which specific group is behind this attack, but the attackers are clearly financially motivated and seem to offer services to other actors," Fox-IT wrote in the January 3 blog post.

Opinion

Editorial

Smog hazard
Updated 05 Nov, 2024

Smog hazard

The catastrophe unfolding in Lahore is a product of authorities’ repeated failure to recognise environmental impact of rapid urbanisation.
Monetary policy
05 Nov, 2024

Monetary policy

IN an aggressive move, the State Bank on Monday reduced its key policy rate by a hefty 250bps to 15pc. This is the...
Cultural power
05 Nov, 2024

Cultural power

AS vital modes of communication, art and culture have the power to overcome social and international barriers....
Disregarding CCI
Updated 04 Nov, 2024

Disregarding CCI

The failure to regularly convene CCI meetings means that the process of democratic decision-making is falling apart.
Defeating TB
04 Nov, 2024

Defeating TB

CONSIDERING the fact that Pakistan has the fifth highest burden of tuberculosis in the world as per the World Health...
Ceasefire charade
Updated 04 Nov, 2024

Ceasefire charade

The US talks of peace, while simultaneously arming and funding their Israeli allies, are doomed to fail, and are little more than a charade.