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Warning: The Ransomware "Cryptowall" is Spreading Through Ads on Well-known Websites, Causing User Data Easily Lost

2014-06-17

Recently,the Baidu Antivirus Security Center noticed that a ransomware known as"Cryptowall" (detected as Trojan.Win32.CryptoWall.45) was quickly spreading through advertising services provided on well-known websites such as Disney and Facebook. According to reports, cyber criminals are using legitimate means (such as banner or side window ads) to "install" Mavlertising on well-known websites. After carelessly clicking on the Malvertising, users will be directed to elaborately constructed malicious websites that try to exploit loopholes in Adobe Flash Player, Java, and Silverlight to install the ransomware Cryptowall. After a computer being infected, Cryptowall encrypts important files on the computer and forces users to pay a ransom to decrypt the data.


At an earlier time, the US Federal Bureau of Investigation (FBI) and the US Department of Justice (DOJ) announced that, through great international effort,they had destroyed a massive botnet distributing Cryptolocker. However, the dissemination of Cryptowall reminds us that, Cryptolocker is not the only ransomware threat facing users. Cryptolocker's successful precedent has caught the attention of other cyber criminals, and these "hardworking" individuals are releasing even more variants of ransomwares. Furthermore, they are using effective methods that are harder to notice to attack users. The Cyrptolocker is just like Cryptowall, which uses regular channels to spread itself through advertising systems on Facebook and other legitimate websites.


Baidu Antivirus security experts would like to remind users that, ransomwares like Cryptowall will encrypt your computers files, which can lead to permanent data loss. In order to prevent important private (or even company) data from being damaged,please be sure to turn on all of your security software's protection features.Currently, Baidu Antivirus users can intercept Cryptowall by enabling full protection. It is recommended that other users download the latest version of Baidu Antivirus and enable the full protection feature to keep the safety of their computers data.

 

Additionally,users can follow the steps below to improve their computer's internet security capabilities.

 

1.  Get in the habit of regularly backing up computer data

Malware similar to Cryptowallis constantly emerging, and in order to avoid data loss, users need to get in the habit of making regular backups. We recommend backing up your most important data in several different environments (such as on a cloud drive or a specialized mobile device).

 

2.  Keep your software up to date

You can use the built-in App Store of Baidu Antivirus Toolbox to update software promptly,preventing cyber criminals from exploiting the loopholes present in old versions of the software.

 

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