Malware

New malware variant targets Uyghur Mac users

One of the ongoing malware sagas is a political fight that is targeting Uyghur activist groups in China, where spam e-mail laced with backdoor Trojan horse malware has been continuously delivered to members of these groups in an Advanced Persistent Threat attack.

This week, security company F-secure uncovered yet another variant of this attack being used.

Like prior ones, the new variant takes advantage of old vulnerabilities in Microsoft Word, by sending attachments that will embed the malware in the affected system if the document is opened in an unpatched version of Word.

The malware used has changed a little … Read more

Targeted cyberattacks jump 42 percent in 2012, Symantec says

Internet users are seeing less spam but more targeted attacks, according to security software company Symantec.

Looking at last year's security landscape, Symantec's Internet Security Threat Report 2013 found that traditional spam accounted for 69 percent of all e-mail in 2012, down from 75 percent in 2011. Yet, 30 billion spam messages are still sent on a daily basis.

Junk e-mails that hawk sex or dating products and services now account for 55 percent of all spam, taking the top spot away from pharmaceutical spam.

Malware is also part of one out of every 291 e-mail messages, with … Read more

North Korea behind March cyberattack, says South Korea

South Korea has accused North Korea of launching a recent cyberattack that hit tens of thousands of PCs.

A spokesman for South Korea's Internet agency said today that six computers in North Korea were identified as the source of the attack, according to The Guardian. Those computers used more than 1,000 IP addresses from across the world to infect 48,000 PCs and servers at South Korean banks and broadcasting stations.

The spokesman told the Associated Press that the attack mimicked past hacking attempts by North Korea and pointed the finger at an espionage agency run by the military. … Read more

Who wrote the Flashback Trojan?

In September 2011, security companies first noticed a new malware scam for OS X, which posed as a fake Adobe Flash installer, and hence became known as Flashback. Unlike prior scams, this malware took on some new approaches to tricking users by infecting common browsers, disabling Apple's XProtect system, and eventually morphing into a Java-based exploit that resulted in approximately 600,000 Macs being infected worldwide.

The Flashback malware has been seen as one of the more widespread and successful attacks on the OS X platform, but while it was eventually snuffed out a year later, it left everyone … Read more

South Korean cyberattack may not have come from China

South Korea apparently still has a mystery on its hands. Who launched a cyberattack against several of its banks and broadcasters this week?

Regulators for the country initially pointed the finger at China, saying that the attacks originated from a Chinese IP address. But they admitted today that they jumped the gun.

The IP address used in the attack was actually traced to one of the banks hit on Wednesday. South Korea's NongHyup Bank had been using the address as a virtual one for its internal network, according to Reuters. By coincidence, that address matched one registered in China.… Read more

How to remove 'Yontoo' adware Trojan from your OS X system

Security company Dr. Web is reporting on a new adware Trojan attack that is targeting Mac users, where malicious Web sites will trick users into installing a plugin that will track your browsing and display ads to you.

The malware, called "Yontoo," will be first encountered as a media player, download manager, or other plug-in requirement for viewing contents on some maliciously crafted Web sites disguised as sources for file sharing and movie trailers. When the plug-in prompt is clicked, you're redirected to a site that downloads the Trojan installer and requires you to run it. The … Read more

Chameleon botnet steals $6M per month in click fraud scam

Security researchers say they have identified a botnet that steals more than $6 million per month by generating fake customer clicks on online display ads.

Dubbed Chameleon, the botnet has infected more than 120,000 Windows-based computers in the U.S., mimicking human behavior on select Web sites to generate billions of ad impressions and fraudulent income for its creators, according to security firm Spider.io.

Click fraud costs Web advertisers in lost revenue by making them pay for illegitimate clicks. Spider.io reported that advertisers paid an average of 69 cents per one thousand impressions generated by the botnet. … Read more

Researchers highlight potential security risk to iOS users

Android usually gets smacked around for playing host to mobile malware, but iOS isn't totally immune, according to researchers at Skycure Security.

iOS profiles, aka mobileconfig files, are used by mobile carriers to configure key settings for e-mail, Wi-Fi, and other features. But these files could be abused by attackers to sneak past Apple's normally tight security and and hijack a mobile device, the security firm revealed in a blog post today.

The process would be similar to that of a typical malware infection.

An attacker might tempt users to visit a malicious Web site by promising something … Read more

Microsoft to patch critical holes in IE, Office, Silverlight

Windows users will get the usual round of security patches from Microsoft next Tuesday.

Among the seven fixes due to roll out March 12, four are rated critical, which means they address flaws that could let an attacker execute malware on a remote PC by steering a user to a malicious Web site or e-mail link.

The patch for Internet Explorer is designed to shore up all versions from IE6 to IE10 across all iterations of Windows from XP to Windows 8 and RT. The patch for Microsoft's Silverlight, a browser plug-in that can display online videos and other … Read more

Apple marketing chief jabs Android security on Twitter

Apple marketing chief Phil Schiller has been a semi-regular Twitter user since 2008, though mostly tweets about things like music, movies and sports.

But that changed earlier today with a post linking to F-Secure Labs' latest quarterly Mobile Threat report, with a casual mention to "be safe out there."

The 29-page report's (PDF) key finding is that malware on Google's Android is getting worse, in part because of the platform's brisk growth and a new variant of malware that spread using SMS.

"Android malware has been strengthening its position in the mobile threat scene,&… Read more