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‘Stegano’ Malvertising Exposes Millions To Hacking
December 13, 2016 by admin
Filed under Around The Net
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Since October, millions of internet users have been exposed to malicious code embedded in the pixels from tainted banner ads designed to install Trojans and spyware, according to security firm ESET.
The attack campaign, called Stegano, has been spreading from malicious ads in a “number of reputable news websites,” ESET said in a Tuesday blog post. It’s been preying on Internet Explorer users by scanning for vulnerabilities in Adobe Flash and then exploiting them.
The attack is designed to infect victims with malware that can steal email password credentials through its keylogging and screenshot grabbing features, among others.
The attack is also hard to detect. To infect their victims, the hackers were essentially poisoning the pixels used in the tainted banner ads, ESET said in a separate post.
The hackers concealed their malicious coding in the parameters controlling the pixels’ transparency on the banner ad. This allowed their attack to go unnoticed by the legitimate advertising networks.
Victims will typically see a banner ad for a product called “Browser Defense” or “Broxu.” But in reality, the ad is also designed to run Javascript that will secretly open a new browser window to a malicious website designed to exploit vulnerabilities in Flash that will help carry out the rest of the attack.
Hackers have used similar so-called malvertising tactics to secretly serve malicious coding over legitimate online advertising networks. It’s an attack method that has proven to be a successful at quickly spreading malware to potentially millions.
The makers behind the Stegano attack were also careful to create safeguards to prevent detection, ESET said. For instance, the banner ads will alternate between serving a malicious version or a clean version, depending on the settings run on the victim’s computer. It will also check for any security products or virtualization software on the machine before proceeding with the attack.
ESET declined to name the news websites that were found unknowingly displaying the malicious ads, but cautioned that the attack was widespread, and could have been hosted through other popular sites as well.
Source-http://www.thegurureview.net/aroundnet-category/stegano-malvertising-ads-expose-millions-of-online-users-to-hacking.html
Does AVG Respect Your Privacy?
AVG has been answering questions about its new privacy policy after accusations that the firm is about to sell its users down the river.
A Reddit discussion has heard from furious users who spotted that the simplified policy effectively gives the company permission to sell its mailing lists to third parties for fun and profit.
AVG stated under ‘Do You Share My Data?’ in the Q&A about the new policy, which is automatically enforced on 15 October: “Yes, though when and how we share it depends on whether it is personal data or non-personal data. AVG may share non-personal data with third parties and may publicly display aggregate or anonymous information.”
AVG has hit back at the criticism in a blog post today, by which we mean confirmed that its stance is correct, explaining: “Usage data allows [AVG] to customize the experience for customers and share data with third parties that allow them to improve or develop new products.
“Knowing that 10 million users like a certain TV program gives broadcasters the data to get producers to make more of that type of program.
“This is also how taxi firms know how to distribute their fleets, and how advertisers know where to place banners and billboards, for example. Even at AVG, we have published non-personal information that we have collected regarding app performance.”
But AVG added in big, bold type: “We do not, and will not, sell personally identifiable data to anyone, including advertisers.”
This will placate some, but others fear that the lack of choice over this matter, which requires an active decision to opt out, is too clandestine. As ever, there are threats to move to everything from Linux Mint to the Commodore 64, some more serious than others.
Several Redditors have likened it to similar warnings in Windows 10′s Insider Programme which essentially say: ‘we can track you … but we won’t, unless we do.’
Courtesy-TheInq
Adobe Reader Security Issue Found
McAfee has discovered a vulnerability in Adobe’s Reader program that allows people to track the usage of a PDF file.
“Recently, we detected some unusual PDF samples,” McAfee’s Haifei Li said in a blog post. “After some investigation, we successfully identified that the samples are exploiting an unpatched security issue in every version of Adobe Reader.”
The affected versions of Adobe Reader also include the latest “sandboxed” Reader XI (11.0.2).
McAfee said that the issue is not a “serious problem” because it doesn’t enable code execution, however it does permit the sender to see when and where a PDF file has been opened.
This vulnerability could only be dangerous if hackers exploited it to collect sensitive information such as IP address, internet service provider (ISP), or even the victim’s computing routine to eventually launch an advanced persistent threat (APT).
McAfee said that it is unsure who is exploiting this issue or why, but have found the PDFs to be delivered by an “email tracking service” provider.
The vulnerability works when a specific PDF JavaScript API is called with the first parameter having a UNC-located resource.
“Adobe Reader will access that UNC resource. However, this action is normally blocked and creates a warning dialog,” Li said. “The danger is that if the second parameter is provided with a special value, it changes the API’s behavior. In this situation, if the UNC resource exists, we see the warning dialog.
“However, if the UNC resource does not exist, the warning dialog will not appear even though the TCP traffic has already gone.”
McAfee said that it has reported the issue to Adobe and is waiting for their confirmation and a future patch. Adobe wasn’t immediately available for comment at the time of writing.
“In addition, our analysis suggests that more information could be collected by calling various PDF Javascript APIs. For example, the document’s location on the system could be obtained by calling the Javascript “this.path” value,” Li added.
USA In Danger Of Cyber Experts Shortage
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Leading cyber experts warned of a shortage of talented computer security experts in the United States, making it extremely difficult to keep corporate and government networks safe at a time when attacks are on the rise.
Symantec Corp Chief Executive Enrique Salem told the Reuters Media and Technology Summit in New York that his company was working with the U.S. military, other government agencies and universities to help develop new programs to train security professionals.
“We don’t have enough security professionals and that’s a big issue. What I would tell you is it’s going to be a bigger issue from a national security perspective than people realize,” he said on Tuesday.
Jeff Moss, a prominent hacking expert who sits on the U.S. Department of Homeland Security Advisory Council, said that it was difficult to persuade talented people with technical skills to enter the field because it can be a thankless task.
“If you really look at security, it’s like trying to prove a negative. If you do security well, nobody comes and says ‘good job.’ You only get called when things go wrong.”
The warnings come at a time when the security industry is under fire for failing to detect increasingly sophisticated pieces of malicious software designed for financial fraud and espionage and failing to prevent the theft of valuable data.
Moss, who goes by the hacker name “Dark Tangent,” said that he sees no end to the labor shortage.
1 In 5 U.S. PCs Have No Antivirus Protection
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Nearly a fifth of Windows PCs in the U.S. lack any active security protection, an antivirus vendor stated on Wednesday, citing numbers from a year-long project.
“The scale of this is unprecedented,” argued Gary Davis, the director of global consumer product marketing for McAfee, talking about the scope of his company’s sampling of PC security.
McAfee took measurements from scans of more than 280 million PCs over the last 12 months, and found that 19.3% of all U.S. Windows computers browsed the Web sans security software. Owners of those systems downloaded and used McAfee’s free Security Scan Plus, a tool that checks for antivirus programs and enabled firewalls.
Globally, the average rate was 17%, putting the U.S. in the top 5 most-unprotected countries of the 24 represented in the scans.
Of the unprotected PCs in the U.S., 63% had no security software at all, while the remaining 37% had an AV program that was no longer active. The latter were likely trial versions of commercial antivirus software that had expired.
Antivirus trials are a fact of life in the Windows world. Most new machines come with security software that runs for a limited time. Some new Dell PCs, for example, come with a 30-day trial of McAfee’s Security Center program.
More Trojan Malware Found On Macs
Following the outbreak of the Flashback Mac Trojan, security researchers have identified two more cases of Mac OS X malware. The good news is most Mac owners have little reason to worry about them.
Both cases are variants on the same Trojan, called SabPub, Kaspersky Lab Expert Costin Raiu wrote on Securelist.
The first variant is known as Backdoor.OSX.SabPub.a. Like Flashback, this new threat was likely spread through Java exploits on Websites, and allows for remote control of affected systems. It was created roughly one month ago.
Fortunately, this malware isn’t a threat to most users for a few reasons: It may have only been used in targeted attacks, Raiu wrote, with links to malicious Websites sent via e-mail, and the domain used to fetch instructions for infected Macs has since been shut down.
Furthermore, Apple’s security update for Flashback helps render future Java-based attacks harmless. In addition to removing the Flashback malware, the update automatically deactivates the Java browser plug-in and Java Web Start if they remain unused for 35 days. Users must then manually re-enable Java when they encounter applets on a Web page or a Web Start application.
The second SabPub variant is old-school compared to its sibling. Instead of attacking through malicious Websites, it uses infected Microsoft Word documents as vector, distributed by e-mail.
Apple Has A Hole In MAC OS X
Apple has failed to fix a bug in its Mac OS X operating system that allows processes to bypass the sandbox protection in place.
The flaw was discovered by Anibal Sacco and Matias Eissler from Core Security Technologies. They let Apple know about the problem on 20 September, and while Apple acknowledged their submission, it said that it did not see any security threat, forcing the Core Security Technologies team to publish the report to the public this month.
The problem appears to be with the use of Apple events in several default profiles, including the no-network and no-internet ones. When Apple events are dispatched a process can escape the sandbox, which could be exploited by hackers.
The vulnerability could lead to a compromised application restricted by the use of the no-network profile gaining access to network resources through the use of Apple events to execute other applications that are not restricted by the sandbox, making it a significant security threat.
Only the more recent versions of Mac OS X are vulnerable to this bug, including 10.5.x, 10.6.x, and 10.7.x. Those using 10.4.x are safe from the exploit.
Apple Website Is Ripe For Hacking
July 4, 2011 by admin
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According to the Ethical Hacking group YGN, Apple’s website for developers is virtually wide open and gives the opportunity for hackers to introduce malware such asphishing attacks to gain access to subscriber’s vital personal information.
One group known as Networkworld identified three holes on Apple’s website that arbitrary URL redirects, cross-site scripting and HTTP response splitting. That said, these holes could allow hackers to arbitrarily redirect to other websites and make phishing attacks against developers login credentials more successful.
Download Defense Added To Chrome Browser
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Google has updated Chrome to version 12, adding a new feature that warns users when they’ve downloaded files from dangerous Web sites.
New to Chrome 12 is a tool that flags questionable files pulled from the Web. Chrome now shows an alert when users download some file types from sites that are on the Safe Browsing API (application programming interface) blacklist, which Google maintains.
The messages reads: “This file is malicious. Are you sure you want to continue?” If they wish, users can ignore the warning and install the file on their system’s hard drive.
“This warning will be displayed for any download URL that matches the latest list of malicious websites published by the Safe Browsing API,” said Google last April when it debuted the feature in an earlier edition of Chrome.
Safe Browsing already identifies suspicious or unsafe sites, then adds them to a blacklist. Chrome, Mozilla’s Firefox and Apple’s Safari all tap into Safe Browsing to warn users of risky sites before they actually visit them.
Microsoft’s IE Latest Flaw: ‘Cookiejacking’
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A technology security researcher has discovered a flaw in Microsoft Corp’s widely used Internet Explorer browser that he said may allow hackers to steal credentials to access FaceBook, Twitter and other websites.
He coined the technique as ”cookiejacking.”
“Any website. Any cookie. Limit is just your imagination,” said Rosario Valotta, an independent Internet security researcher based in Italy.
Hackers can exploit the flaw to access a data file stored inside the browser known as a “cookie,” which holds the login name and password to a web account, Valotta wrote.
Once a hacker has that cookie, he or she can use it to access the same site, said Valotta, who calls the technique “cookiejacking.”
The vulnerability affects all versions of Internet Explorer, including IE 9, on every version of the Windows operating system.
To take advantage of this flaw, the hacker must first persuade the victim to drag and drop an object across the PC’s screen before the cookie can be hijacked.
That sounds like a difficult task, but Valotta said he was able to do it fairly easily. He built a puzzle that he put up on Facebook in which users are challenged to “undress” a photo of an attractive woman.
“I published this game online on FaceBook and in less than three days, more than 80 cookies were sent to my server,” he said. “And I’ve only got 150 friends.”
Microsoft said there is little risk a hacker could succeed in a real-world cookiejacking scam.
“Given the level of required user interaction, this issue is not one we consider high risk,” said Microsoft spokesman Jerry Bryant.