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Hãy viết đoạn tóm tắt về nội dung bằng tiếng việt kích thích người mua: Macs under threat from malicious ads spreading malware — don’t fall for this

Malvertising or has long been a threat for Windows PCs but hackers are increasingly targeting the and other Apple computers by using bad ads to spread .

According to a from , a new malvertising campaign is being used to infect vulnerable Macs with the Atomic Stealer malware. First advertised on dark web forums back in April of this year, Atomic Stealer is a powerful malware strain which can not only steal crypto but also passwords from web browsers and even .

offering have mostly used pirated software to distributed Atomic Stealer, However, that appears to be changing according to Malwareybtes who discovered a malvertising campaign that uses bad ads to infect unsuspecting Mac users with the malware.

Gaming Google Search

When downloading a new program or app for their Mac, many users often type its name into Google and click on the first search result as they believe this will lead them to what they’re looking for. Unfortunately, this is exactly what you shouldn’t do.

You see, Google Search displays ads at the top of the page and you need to scroll down to get to the actual search results. Many people have likely figured this out by now but many haven’t and this is how hackers game Google Search in their malvertising campaigns.

By buying ads that match well-known and established brands, hackers are able to trick potential victims into visiting their as if they were an official site. This is a lot easier than using or other tactics that could be spotted and stopped by security software.

In the example above from Malwarebytes, the ad itself impersonates the financial charting platform TradingView. However, if you take a closer look at the address the ad points to, you’ll notice that there are special font characters that make it appear like the company’s actual website to the untrained eye.

Clicking on this ad takes potential victims to a phishing site with download buttons for Windows, Mac and Linux. While the Windows and Linux buttons download the NetSupport RAT, the Mac one downloads the Atomic Stealer malware.

Bypassing GateKeeper

Instead of needing to be copied into the Apps folder on your Mac, the downloaded app impersonating TradingView comes with special instructions on how to open it in order to bypass Apple’s security software. GateKeeper is designed to enforce code signing so that only apps signed with an Apple developer signature can be installed on macOS.

Since this installation file containing the Atomic Stealer malware isn’t signed correctly, it’s actually bundled in an ad-hoc signed app so its permissions can’t be revoked. Once launched, it will keep prompting victims for their user password in a never ending loop until they finally give in. With your Mac’s user password in hand, the hackers behind this campaign can steal all sorts of personal and financial data from your computer.

Once this is done, the malware sends this stolen data back to a command and control () server controlled by the hackers behind this campaign. This data can then be used to commit fraud or even .

How to stay safe from Mac malware

Although your Mac comes with Apple’s own malware scanner in the form of , you still need to be careful online.

For instance, you should only download new programs or apps from established companies — or to really be on the safe side, only from the . Likewise, when searching for a program on Google Search (or any other search engine for that matter), you’re going to want to scroll down until you find the official website instead of clicking on the ads that appear first in the search results.

While GateKeeper and xProtect do a good job of keeping you safe, for additional protection, you may also want to consider investing in one of the solutions. These paid antivirus programs are updated more regularly and often contain useful extras like a or a .

Malvertising has been going on for years but it’s only recently that we’ve seen hackers and other cybercriminals shift their tactics to target Macs in addition to Windows PCs. Regardless of what platform you’re using, you always need to be careful before you click and especially so when downloading files or programs online.

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