An attacker is trying to compromise the web browser and the plug-ins installed on the browser. Malvertising (malicious advertising) uses 3rd party ad networks to embed attacks on valid websites that are increasingly popular. What is Malvertising to learn? Ways to prevent Malvertising, read the article below of Taimienphi.vn.
Malvertising (malicious advertising) is not advertising, but software that is vulnerable to the system when users click on links pointing to malicious websites.
The following article will Taimienphi.vn answer you Malvertising is what? Ways to avoid Malvertising.
1. Web browsers and plug-ins are under attack
There are two ways an attacker can compromise a user system. One is to trick users into downloading and running malicious software or something. And the second way is to attack web browsers and plug-ins like Adobe Flash, Oracle Java and Adobe PDF reader. These attacks use security holes in software to force a user’s computer to download and run malware.
If the system is vulnerable – because an attacker exploits a zero-day vulnerability on software that users have not installed or updated security patches – users only need to visit a website with malicious code. Allows an attacker to invade and infect the system.
The malicious code often takes the form of the malicious Falsh object of the Java applet. Clicking on the link will redirect users to malicious websites to compromise the system.
2. What is malvertising?
Instead of trying to trick users into visiting malicious websites, malvertising uses ad networks to spread malicious Flash objects and malicious scripts to other websites.
An attacker uploads Flash objects and other malicious code to the ad network, paying the network to distribute the malicious code as legitimate ads.
Users can access the website and the advertising script on that site will download an ad from the network. The malicious ad will then attempt to compromise the user’s web browser. This is exactly how an attack used Yahoo’s ad network to serve malicious Flash ads.
It is the core of malvertising – taking advantage of software vulnerabilities that users are using to infect legitimate websites. Apart from malvertising, users can also be infected in the same way by clicking on links on malicious websites. Security holes are the core issue here.
3. Ways to prevent Malvertising
Even if the browser does not reload the ad, Taimienphi.vn still recommends that you apply some of the following tips to protect the browser and the system against common online attacks:
– Activate Click-to-Play plug-in: Make sure you have enabled the Click-to-Play plug-in on your web browser. When accessing a web page containing Flash or Java objects, it will not run automatically unless we click on it. Most malicious ads use this plug-in.
– Use MalwareBytes Anti-Exploit: Basically, MalwareBytes Anti-Exploit software is quite user-friendly, designed to replace Microsoft’s EMET security software, targeted primarily at businesses with the ability to remove malicious words. malware form to protect user data. Although you can use Microsoft’s EMET, Taimienphi.vn recommends that you use MalwareBytes Anti-Exploit as an anti-exploit program.
Download MalwareBytes Anti Exploit Download and install here.
This software does not function as antivirus software. Instead MalwareBytes Anti-Exploit monitors users’ web browsers and tracks used browser exploiting techniques.
MalwareBytes Anti-Exploit is a free software that can run with anti-virus software and applications to protect users from browser and plug-in exploits, even zero-day vulnerabilities.
– Disable or uninstall unused frequently used browser plug-ins, including Java: If you do not regularly use browser plug-ins, it is best to uninstall them. This is to reduce the risk of possible software attacks. In addition, Taimienphi.vn recommends that you disable or uninstall the Java plug-in, which exists many security holes.
If Adobe Flash is successfully removed with Java, malicious ads will be difficult to penetrate and infect on users’ computers.
– Update browser plug-in: Regularly update the plug-ins you have installed to ensure the latest security patches are installed. Both Google Chrome and Microsoft Edge automatically update Adobe Flash. Internet Explorer on Windows 8, 8.1 and 10 also automatically updates Flash. If you are using Internet Explorer, Mozilla Firefox, Opera on Windows 7, you will have to set these browsers to automatically update Adobe Flash. Adobe Flash options are available in the Control Panel or on the System Preferences window on the Mac.
– Update to the latest browser version: Although most malvertising attacks target plug-ins, there are a handful of attacks that target web browsers. So in addition to updating plug-ins, make sure your web browser is up to date as well. If you are using Internet Explorer, make sure Windows Update is enabled and regularly install the latest updates.
– Limit your use of Firefox until Electrolysis is complete: Web browsers such as Google Chrome, Internet Explorer and Microsoft Edge all use sandbox technology to prevent browser exploitation and unauthorized access to users’ systems.
A recent malvertising exploit targeted the zero-day vulnerability in Firefox.
Although after years of delay, the sandbox was finally set up on Firefox as part of the Electrolysis project. The multi-process feature was implemented as part of the stable version of the Firefox browser in late 2015 and is currently available on unstable versions. However, this is not enough to ensure that malicious ad attacks targeting Firefox do not occur.
So if you are using Firefox to browse the web, Taimienphi.vn recommends that you use MalwareBytes Anti-Exploit to protect equipment and systems safely.
Currently most malvertising attacks occur primarily on Windows computers. Also, recent attacks on Firefox have occurred on both Firefox for Windows, Linux and Mac.
The article above Taimienphi.vn has just answered for you what is Malvertising? Ways to avoid Malvertising. In addition, if you have any questions or questions, you can leave your comments in the comment section below the article.